ACCEL IV LP ET AL
SC 13G, 1998-02-13
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  Schedule 13G
                                 (Rule 13d-102)

             INFORMATION STATEMENT PURSUANT TO RULES 13d-1 AND 13d-2
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                             (Amendment No._______)*



                               EPIX Medical, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)


                                  Common Stock
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    26881Q101
- --------------------------------------------------------------------------------
                                 (CUSIP Number)


*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).

                         (Continued on following pages)


                               Page 1 of 21 Pages
                       Exhibit Index Contained on Page 19

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>                    <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 26881Q101                                             13 G                   Page 2 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Accel IV L.P. ("A IV")
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     Delaware
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         1,453,110 shares, except that A IV Assoc., the general partner of A IV,
           BENEFICIALLY                      and Breyer, Evnin, Hill, Klingenstein, Patterson, Sednaoui, Swartz, and
      OWNED BY EACH REPORTING                SFP, the general partners of A IV Assoc.,  may be deemed to have shared
              WITH                           voting power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             See response to row 5.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             1,453,110 shares, except that A IV Assoc., the general partner of A IV,
                                             and Breyer, Evnin, Hill, Klingenstein, Patterson, Sednaoui, Swartz, and
                                             SFP, the general partners of A IV Assoc.,  may be deemed to have shared
                                             dispositive power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             See response to row 7.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       1,453,110
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   13.0%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   PN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>                    <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 26881Q101                                             13 G                   Page 3 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Accel Keiretsu L.P. ("AKTSU")
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     Delaware
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         30,138  shares,  except  that AP&C,  the general  partner of  AKSTU and
           BENEFICIALLY                      Breyer,  Evnin,  Hill, Patterson,  Sednaoui and Swartz, the officers of
     OWNED BY EACH REPORTING                 AP&C,  may be deemed  to have shared voting powers with respect to such
              PERSON                         shares.
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             See response to row 5.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             30,138  shares,  except  that AP&C,  the  general  partner of AKSTU and
                                             Breyer,  Evnin, Hill,  Patterson,  Sednaoui and Swartz, the officers of
                                             AP&C, may be deemed to have shared  dispositive  powers with respect to
                                             such shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             See response to row 7.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       30,138
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   0.3%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   PN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>                    <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 26881Q101                                             13 G                   Page 4 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Accel Investors '93 L.P. ("AI93")
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     Delaware
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         58,693  shares,  except that Breyer,  Evnin,  Klingenstein,  Patterson,
           BENEFICIALLY                      Sednaoui  and Swartz,  the general partners of AI93,   may be deemed to
     OWNED BY EACH  REPORTING                have  shared  voting  power with  respect to such shares.
             PERSON
              WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             See response to row 5.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             58,693  shares,  except that Breyer,  Evnin,  Klingenstein,  Patterson,
                                             Sednaoui and Swartz, the general partners of AI93 may be deemed to have
                                             shared dispositive power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             See response to row 7.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       58,693
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   0.5%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   PN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>                    <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 26881Q101                                             13 G                   Page 5 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Swartz Family Partnership L.P. ("SFP")
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a) [ ]          (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     Delaware
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         14,290 shares
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             1,453,110 shares, of which 1,453,110 are shares directly owned by A IV.
                                             SFP is a general  partner of A IV Assoc.,  the general  partner of A IV
                                             and may be deemed to have  shared  voting  power  with  respect to such
                                             shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             14,290 shares
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             1,453,110 shares, of which 1,453,110 are shares directly owned by A IV.
                                             SFP is a general  partner of A IV Assoc.,  the general  partner of A IV
                                             and may be deemed to have shared dispositive power with respect to such
                                             shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       1,467,400
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   13.1%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*                                                              PN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>                    <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 26881Q101                                             13 G                   Page 6 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Accel IV Associates L.P. ("A IV Assoc.")
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     Delaware
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         0 shares.
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             1,453,110 shares, of which 1,453,110 are shares directly owned by A IV.
                                             A IV Assoc.  is the  general  partner of A IV and may be deemed to have
                                             shared voting power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             0 shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             1,453,110 shares, of which 1,453,110 are shares directly owned by A IV.
                                             A IV Assoc.  is the  general  partner of A IV and may be deemed to have
                                             shared dispositive power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       1,453,110
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   13.0%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   PN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                        * SEE INSTRUCTIONS BEFORE FILLING OUT
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>                    <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 26881Q101                                             13 G                   Page 7 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Accel Partners & Co. Inc. ("AP&C")
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     Delaware
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         0 shares.
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             30,138 shares, of which 30,138 are shares directly owned by AKTSU, AP&C
                                             is the general partner of AKTSU and may be deemed to have shared voting
                                             power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             0 shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             30,138 shares, of which 30,138 are shares directly owned by AKTSU, AP&C
                                             is the  general partner of AKTSU  and  may be  deemed  to  have  shared
                                             dispositive power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       30,138
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   0.3%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   CO
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>                    <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 26881Q101                                             13 G                   Page 8 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     James W. Breyer ("Breyer")
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     U.S. Citizen
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         3,570 shares.
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             1,541,941 shares, of which 1,453,110 are shares directly owned by A IV,
                                             30,138  are  shares  directly  owned by AKTSU,  and  58,693  are shares
                                             directly  owned by AI93.  Breyer  may be deemed to have  shared  voting
                                             power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             3,570 shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             1,541,941 shares, of which 1,453,110 are shares directly owned by A IV,
                                             30,138  are  shares  directly  owned by AKTSU,  and  58,693  are shares
                                             directly owned by AI93. Breyer may be deemed to have shared dispositive
                                             power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       1,545,911
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   13.8%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   IN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>                    <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 26881Q101                                             13 G                   Page 9 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Luke B. Evnin ("Evnin")
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     U.S. Citizen
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         17,860 shares.
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             1,541,941 shares, of which 1,453,110 are shares directly owned by A IV,
                                             30,138  are  shares  directly  owned by AKTSU,  and  58,693  are shares
                                             directly owned by AI93. Evnin may be deemed to have shared voting power
                                             with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             17,860 shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             1,541,941 shares, of which 1,453,110 are shares directly owned by A IV,
                                             30,138  are  shares  directly  owned by AKTSU,  and  58,693  are shares
                                             directly owned by AI93. Evnin may be deemed to have shared  dispositive
                                             power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       1,559,801
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   13.9%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   IN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>                   <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 26881Q101                                             13 G                  Page 10 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Eugene D. Hill, III ("Hill")
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     U.S. Citizen
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         1,000 shares.
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             1,483,248  shares, of which 1,453,110 are shares directly owned by A IV
                                             and 30,138 are shares  directly  owned by AKTSU.  Hill may be deemed to
                                             have shared voting power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             1,000 shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             1,483,248  shares, of which 1,453,110 are shares directly owned by A IV
                                             and 30,138 are shares  directly  owned by AKTSU.  Hill may be deemed to
                                             have shared dispositive power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       1,484,248
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                 [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   13.2%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   IN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>                   <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 26881Q101                                             13 G                  Page 11 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Paul H. Klingenstein ("Klingenstein")
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     U.S. Citizen
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         0 shares.
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             1,511,803 shares, of which 1,453,110 are shares directly owned by A IV,
                                             and 58,693  are  shares  directly  owned by AI93.  Klingenstein  may be
                                             deemed to have shared voting power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             0 shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             1,511,803 shares, of which 1,453,110 are shares directly owned by A IV,
                                             and 58,693  are  shares  directly  owned by AI93.  Klingenstein  may be
                                             deemed to have shared dispositive power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       1,511,803
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   13.5%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   IN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>                   <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 26881Q101                                             13 G                  Page 12 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     Arthur C. Patterson ("Patterson")
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     U.S. Citizen
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         123,767 shares of which 34,897 are shares  directly owned by Ellmore C.
           BENEFICIALLY                      Patterson Partners  (`ECPP").  Patterson is the general partner of ECPP
     OWNED BY EACH REPORTING                 and  may  be deemed to  have sole  voting power  with  respect to  such
           PERSON WITH                       shares.
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             1,581,941 shares, of which 1,453,110 are shares directly owned by A IV,
                                             30,138 are shares  directly owned by AKTSU,  58,693 are shares directly
                                             owned  by  AI93,  20,000  are  shares  directly  owned  by  Patterson's
                                             immediate  family and 20,000 are shares directly owned by the Patterson
                                             Family  Foundation of which Patterson is the trustee.  Patterson may be
                                             deemed to have shared voting power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             123,767 shares of which 34,897 are shares  directly owned by Ellmore C.
                                             Patterson Partners  (`ECPP").  Patterson is the general partner of ECPP
                                             and may be deemed to have sole  dispositive  power with respect to such
                                             shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             1,581,941 shares, of which 1,453,110 are shares directly owned by A IV,
                                             30,138 are shares  directly owned by AKTSU,  58,693 are shares directly
                                             owned  by  AI93,  20,000  are  shares  directly  owned  by  Patterson's
                                             immediate  family and 20,000 are shares directly owned by the Patterson
                                             Family  Foundation of which Patterson is the trustee.  Patterson may be
                                             deemed to have shared dispositive power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       1,705,708
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ] 
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   15.2%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   IN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>                   <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 26881Q101                                             13 G                  Page 13 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     G. Carter Sednaoui ("Sednaoui")
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     U.S. Citizen
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         3,570 shares.
           BENEFICIALLY
     OWNED BY EACH REPORTING
              PERSON
               WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             1,541,941 shares, of which 1,453,110 are shares directly owned by A IV,
                                             30,138  are  shares  directly  owned by AKTSU,  and  58,693  are shares
                                             directly  owned by AI93.  Sednaoui may be deemed to have shared  voting
                                             power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             3,570 shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             1,541,941 shares, of which 1,453,110 are shares directly owned by A IV,
                                             30,138  are  shares  directly  owned by AKTSU,  and  58,693  are shares
                                             directly  owned  by  AI93.  Sednaoui  may  be  deemed  to  have  shared
                                             dispositive with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       1,545,511
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   13.8%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   IN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


<TABLE>
<CAPTION>
<S>                                                             <C>                   <C>
- --------------------------------------------------------                     ---------------------------------------
CUSIP NO. 26881Q101                                             13 G                  Page 14 of 21 Pages
- --------------------------------------------------------                     ---------------------------------------

- ----------- --------------------------------------------------------------------------------------------------------
1           NAME OF REPORTING PERSONS
            SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

                     James R. Swartz ("Swartz")
- ----------- --------------------------------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                   (a)  [ ]         (b)  [X]
- ----------- --------------------------------------------------------------------------------------------------------
3           SEC USE ONLY
- ----------- --------------------------------------------------------------------------------------------------------
4           CITIZENSHIP OR PLACE OF ORGANIZATION

                     U.S. Citizen
- ----------- --------------------------------------------------------------------------------------------------------
            NUMBER OF               5        SOLE VOTING POWER
              SHARES                         42,870 shares,  of which 14,290 are shares directly owned by the Swartz
           BENEFICIALLY                      Foundation  Trust of which  Swartz is the trustee and 14,290 are shares
        OWNED BY EACH REPORTING              directly  owned by SFP of which Swartz is the general  partner.  Swartz
             PERSON                          may be deemed to have sole voting power with respect to such shares.
              WITH
                                    -------- -----------------------------------------------------------------------
                                    6        SHARED VOTING POWER
                                             1,541,941 shares, of which 1,453,110 are shares directly owned by A IV,
                                             30,138  are  shares  directly  owned by AKTSU,  and  58,693  are shares
                                             directly  owned by AI93.  Swartz  may be deemed to have  shared  voting
                                             power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    7        SOLE DISPOSITIVE POWER
                                             42,870 shares,  of which 14,290 are shares directly owned by the Swartz
                                             Foundation  Trust of which  Swartz is the trustee and 14,290 are shares
                                             directly  owned by SFP of which Swartz is the general  partner.  Swartz
                                             may be deemed to have sole voting power with respect to such shares.
                                    -------- -----------------------------------------------------------------------
                                    8        SHARED DISPOSITIVE POWER
                                             1,541,941 shares, of which 1,453,110 are shares directly owned by A IV,
                                             30,138  are  shares  directly  owned by AKTSU,  and  58,693  are shares
                                             directly owned by AI93. Swartz may be deemed to have shared dispositive
                                             power with respect to such shares.
- ----------------------------------- -------- -----------------------------------------------------------------------
9           AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
            REPORTING PERSON                                                                       1,584,811
- ----------- --------------------------------------------------------------------------------------------------------
10          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
            EXCLUDES CERTAIN SHARES*                                                                [ ]
- ----------- --------------------------------------------------------------------------------------------------------
11          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   14.1%
- ----------- --------------------------------------------------------------------------------------------------------
12          TYPE OF REPORTING PERSON*
                                                                                                   IN
- ----------- --------------------------------------------------------------------------------------------------------

<FN>
                                       * SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>

<PAGE>


                                                                   Page 15 of 21

ITEM 1(a).        NAME OF ISSUER:

                  EPIX Medical, Inc.

ITEM 1(b).        ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

                  71 Rogers Street
                  Cambridge, MA  02142-1118

ITEM 2(a).        NAME OF PERSONS FILING:

                  This  Statement  is filed by Accel  IV L.P.  ("A  IV"),  Accel
Keiretsu L.P. ("AKTSU"),  Accel Investors '93 L.P. ("AI93"), Accel IV Associates
L.P.  ("A IV  Assoc."),  Accel  Partners  & Co.  Inc.  ("AP&C"),  Swartz  Family
Partnership L.P. (SFP"),  James W. Breyer  ("Breyer"),  Luke B. Evnin ("Evnin"),
Eugene D. Hill, III ("Hill"), Paul H. Klingenstein  ("Klingenstein"),  Arthur C.
Patterson  ("Patterson"),  G. Carter Sednaoui  ("Sednaoui")  and James R. Swartz
("Swartz").  The foregoing entities and individuals are collectively referred to
as the "Reporting Persons."

ITEM 2(b).        ADDRESS OF PRINCIPAL BUSINESS OFFICE, OR, IF NONE, RESIDENCE:

                  The address of the principal  business  office for each of the
Reporting Persons is:

                  428 University Avenue
                  Palo Alto, CA  94301

ITEM 2(c)         CITIZENSHIP:

                  A IV, AKTSU,  AI93, A IV Assoc.  and SFP are Delaware  Limited
                  Partnerships,  AP&C is a Delaware S  Corporation  and  Breyer,
                  Evnin, Hill, Klingenstein,  Patterson, Sednaoui and Swartz are
                  United States citizens.

ITEM 2(d).        TITLE OF CLASS OF SECURITIES:

                  Common Stock

ITEM 2(e).        CUSIP NUMBER:

                  CUSIP # 26881Q101

ITEM 3.           Not Applicable

ITEM 4.           OWNERSHIP:

                  The following information with respect to the ownership of the
                  Common  Stock  of  the  issuer  by  the  persons  filing  this
                  Statement is provided as of December 31, 1997:



<PAGE>


                                                                   Page 16 of 21

                  (a)      Amount beneficially owned:

                           See Row 9 of cover page for each Reporting Person.

                  (b)      Percent of Class:

                           See Row 11 of cover page for each Reporting Person.

                  (c)      Number of shares as to which such person has:

                                 (i)   Sole power to vote or to direct the vote:

                                       See  Row  5  of   cover   page  for  each
                                       Reporting Person.

                                 (ii)  Shared  power  to vote or to  direct  the
                                       vote:

                                       See  Row  6  of   cover   page  for  each
                                       Reporting Person.

                                 (iii) Sole  power to  dispose  or to direct the
                                       disposition of:

                                       See  Row  7  of   cover   page  for  each
                                       Reporting Person.

                                 (iv)  Shared  power to dispose or to direct the
                                       disposition of:

                                       See  Row  8  of   cover   page  for  each
                                       Reporting Person.

ITEM 5.           OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS:

                  Not applicable.

ITEM 6.           OWNERSHIP  OF MORE THAN  FIVE  PERCENT  ON  BEHALF OF  ANOTHER
                  PERSON:

                                    Under certain circumstances set forth in the
                  limited partnership agreements of A IV, A IV Assoc., AKTSU and
                  AI93,  the  general  and  limited  partners  of  each  of such
                  entities may be deemed to have the right to receive  dividends
                  from, or the proceeds  from,  the sale of shares of the issuer
                  owned by each such fund.


ITEM 7.           IDENTIFICATION  AND  CLASSIFICATION  OF THE  SUBSIDIARY  WHICH
                  ACQUIRED THE SECURITY  BEING REPORTED ON BY THE PARENT HOLDING
                  COMPANY:

                  Not applicable.



<PAGE>


                                                                   Page 17 of 21

ITEM 8.           IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP:

                  Not applicable

ITEM 9.           NOTICE OF DISSOLUTION OF GROUP:

                  Not applicable

ITEM 10.          CERTIFICATION:

                  Not applicable



<PAGE>


                                                                   Page 18 of 21

                                    SIGNATURE

                  After  reasonable  inquiry and to the best of my knowledge and
belief,  I certify  that the  information  set forth in this  statement is true,
complete and correct.

Dated:  February 13, 1998




Entities:

Accel IV L.P.
Accel Keiretsu L.P.
Accel Investors '93 L.P.
Accel IV Associates L.P.
Accel Partners & Co. Inc.           By:   /s/ G. Carter Sednaoui
Swartz Family Partnership L.P.            --------------------------------------
                                          G. Carter Sednaoui, Attorney-in-fact
                                          for above-listed entities
Individuals:

James W. Breyer
Luke B. Evnin
Eugene D. Hill, III
Paul H. Klingenstein
Arthur C. Patterson
G. Carter Sednaoui                  By:   /s/ G. Carter Sednaoui
James R. Swartz                           --------------------------------------
                                          G. Carter Sednaoui, Individually and
                                          as Attorney-in-fact for above-listed
                                          individuals


<PAGE>


                                                                   Page 19 of 21

                                  EXHIBIT INDEX



                                                                     Found on
                                                                   Sequentially
Exhibit                                                            Numbered Page
- -------                                                            -------------
Exhibit A:  Agreement of Joint Filing                                   20

Exhibit B:  Reference to G. Carter Sednaoui as Attorney-in-Fact         21





<PAGE>



                                    EXHIBIT A

                            Agreement of Joint Filing

                  The  undersigned  hereby agree that a single  Schedule 13G (or
any amendment thereto) relating to the Common Stock of EPIX Medical,  Inc. shall
be filed on behalf of each of the  undersigned  and that this Agreement shall be
filed as an exhibit to such Schedule 13G.


Dated:  February 13, 1998


Entities:

Accel IV L.P.                                                                   
Accel Keiretsu L.P.                                                             
Accel Investors '93 L.P.                                                        
Accel IV Associates L.P.                                                        
Accel Partners & Co. Inc.           By:   /s/ G. Carter Sednaoui                
Swartz Family Partnership L.P.            --------------------------------------
                                          G. Carter Sednaoui, Attorney-in-fact  
                                          for above-listed entities             
Individuals:                                                                    
                                                                                
James W. Breyer                                                                 
Luke B. Evnin                                                                   
Eugene D. Hill, III                                                             
Paul H. Klingenstein                                                            
Arthur C. Patterson                                                             
G. Carter Sednaoui                  By:   /s/ G. Carter Sednaoui                
James R. Swartz                           --------------------------------------
                                          G. Carter Sednaoui, Individually and  
                                          as Attorney-in-fact for above-listed  
                                          individuals                           


<PAGE>


                                                                   Page 21 of 21

                                    EXHIBIT B

               REFERENCE TO G. CARTER SEDNAOUI AS ATTORNEY-IN-FACT



                  G.  Carter  Sednaoui  has signed  the  enclosed  documents  as
Attorney-In-Fact.  Note that copies of the  applicable  Power of  Attorneys  are
already on file with the appropriate agencies.





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