DREYFUS MONEY MARKET INSTRUMENTS INC
N-30D, 1999-08-26
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Dreyfus

Money Market

Instruments, Inc.

SEMIANNUAL REPORT June 30, 1999

(reg.tm)






<PAGE>

The  views  expressed herein are current to the date of this report. These views
and  the  composition  of the fund's portfolio are subject to change at any time
based on market and other conditions.

   * Not FDIC-Insured  * Not Bank-Guaranteed  * May Lose Value

Year 2000 Issues (Unaudited)

The fund could be adversely affected if the computer systems used by The Dreyfus
Corporation and the fund's other service providers do not properly process and
calculate date-related information from and after January 1, 2000. The Dreyfus
Corporation is working to avoid Year 2000-related problems in its systems and to
obtain assurances from other service providers that they are taking similar
steps. In addition, issuers of securities in which the fund invests may be
adversely affected by Year 2000-related problems. This could have an impact on
the value of the fund's investments and its share price.



<PAGE>

                                 Contents

                                 THE FUND
- --------------------------------------------------

                             2   Letter from the President

                             3   Discussion of Fund Performance

                             6   Statements of Investments

                            10   Statement of Assets and Liabilities

                            11   Statement of Operations

                            12   Statement of Changes in Net Assets

                            13   Financial Highlights

                            15   Notes to Financial Statements

                                 FOR MORE INFORMATION
- ---------------------------------------------------------------------------

                                 Back Cover

<PAGE>


                                                                       The Fund

                                                           Dreyfus Money Market

                                                              Instruments, Inc.

LETTER FROM THE PRESIDENT

Dear Shareholder:

We  are  pleased  to  present  this  semiannual  report for Dreyfus Money Market
Instruments,  Inc.,  covering  the six-month period from January 1, 1999 through
June  30,  1999. Inside, you'll find valuable information about how the fund was
managed during the period, including a discussion with senior portfolio manager,
Patricia A. Larkin.

After  remaining  relatively  steady during the first quarter of 1999, yields on
money  market  securities  generally  rose  in the second quarter in response to
expectations  that  the  Federal  Reserve  Board would raise short-term interest
rates  at  their June meeting. On June 30, the Federal Reserve raised rates amid
stronger-than-expected  global and domestic economic growth. Their objective was
to forestall a potential resurgence of inflationary pressures.

We  appreciate  your confidence over the past six months, and we look forward to
your continued participation in Dreyfus Money Market Instruments, Inc.

Sincerely,


Stephen E. Canter

President and Chief Investment Officer

The Dreyfus Corporation

July 15, 1999





<PAGE 2>

DISCUSSION OF FUND PERFORMANCE

Patricia A. Larkin, Senior Portfolio Manager

How did Dreyfus Money Market Instruments, Inc.  perform during the period?

For  the six-month period ended June 30, 1999, Dreyfus Money Market Instruments,
Inc.  produced  an  annualized  yield  of  4.14%  for  both its Money Market and
Government Securities Series. Taking into account the effect of compounding, the
annualized  effective yield was 4.22% for both series.(1) Both series provided a
total  return of 2.07%,(2)  compared to the Lipper Money Market Instrument Funds
and  U.S.  Treasury  Money Market Funds category averages total returns of 2.09%
and 2.00%, respectively, for the same period.(3)

We  attribute the fund's yield to the fact that we owned longer-term securities,
while  maintaining  an average dollar-weighted fund maturity of 90 days or less,
which  enabled us to lock in higher returns in an environment characterized, for
all but the end of the period, by declining or stable interest rates.

What is the fund's investment approach?

There  are many factors we consider in managing the fund. We closely monitor the
outlook  for  growth  and  inflation.  We  follow  overseas developments for any
influence  they  may  have  on  the domestic economy. The posture of the Federal
Reserve  Board  (the  "Fed") is a key determinant in our decision on how best to
structure the fund.

In  addition,  we actively manage the average maturity of the fund in an attempt
to  take  advantage  of  expected  interest rate changes based upon our economic
outlook.  If  we  believe  the  interest  rates will fall, we typically lengthen
average maturity to lock in the then-current rates. Conversely, in a rising rate
environment,  we  typically  shorten  maturities  to  be  able  to  reinvest  at
anticipated higher rates in the future.

                                                             The Fund



<PAGE 3>

DISCUSSION OF FUND PERFORMANCE (CONTINUED)

As  a  money  market fund, the fund only buys securities rated in one of the two
highest rating categories for debt obligations, or of comparable credit quality.
The  fund must also maintain an average dollar-weighted fund maturity of 90 days
or  less  and  may buy only securities with remaining maturities of 13 months or
less.

What other factors influenced the fund's performance?

Last fall, in the wake of Asian market turmoil, the Open Market Committee of the
Fed cut short-term interest rates three times in an attempt to provide liquidity
and  improve  investor  confidence.  Since  then,  there have been concerns that
global  and  domestic  factors  might  push  the  United  States economy towards
unsustainable growth.

As of June 30, 1999, Asian economies appear to have stabilized. What's more, the
outlook  for  growth in the major industrialized nations has been improving. The
domestic  economy continued to move ahead briskly, evidenced by a strong rebound
in  manufacturing  output,  which  shows  signs  of  gaining  momentum. Consumer
confidence  was  at  a  30-year  high.  Employment was strong, with hourly wages
rising.  Despite  concerns  that  overly  rapid  economic  growth  might lead to
destructive  inflationary  pressure,  the Fed held interest rates steady through
all  but the very end of the period. Because we managed the fund at a relatively
longer  average  maturity, investors have been able to benefit from stable rates
and the Fed's long-held accommodative stance during the reporting period.

What is the fund's current strategy?

Throughout  the  reporting period, as the economy showed robust growth, bond and
money  markets  anticipated  a  tightening  of  monetary policy by the Fed. Such
tightening  was  signaled by Chairman Alan Greenspan's mid-May announcement of a
shift  in  policy  towards  a bias to increase rates. The bias changed, in fact,
just    prior    to    the    end    of    the


<PAGE 4>


reporting  period,  when  the  Fed  raised  the  target  Federal  Funds rates by
one-quarter of a point to five percent, with an accompanying return to a neutral
stance  on  future Federal Funds rate movement. An initial relief rally has been
replaced by a cautious "wait and see" market view.

Over  the  reporting  period, the fund benefited from our commitment of a longer
maturity  structure.  When  rates  did  not rise as quickly as markets expected,
longer  maturities  enhanced  return. However, over the past few months, we have
taken a somewhat less aggressive stance, slowly reducing the average maturity of
our  investments.  In  an  uncertain  market  with  the  potential  for  further
tightening,  we have adopted this approach, while still seeking opportunities to
capture additional yield as such opportunities arise.

July 15, 1999

(1)  ANNUALIZED EFFECTIVE YIELD IS BASED UPON DIVIDENDS DECLARED DAILY AND
REINVESTED MONTHLY.  PAST PERFORMANCE IS NO GUARANTEE OF FUTURE RESULTS.  YIELDS
FLUCTUATE.  AN INVESTMENT IN THE FUND IS NOT INSURED OR GUARANTEED BY THE FDIC
OR ANY OTHER GOVERNMENT AGENCY.  ALTHOUGH THE FUND SEEKS TO PRESERVE THE VALUE
OF YOUR INVESTMENT AT $1.00 PER SHARE, IT IS POSSIBLE TO LOSE MONEY BY INVESTING
IN THE FUND.

(2)  TOTAL RETURN INCLUDES REINVESTMENT OF DIVIDENDS.

(3)  SOURCE: LIPPER ANALYTICAL SERVICES, INC.

                                                             The Fund

<PAGE 5>
<TABLE>
<CAPTION>


STATEMENT OF INVESTMENTS--

Money Market Series

June 30, 1999 (Unaudited)

                                                                                             Principal
<S>                                                                                          <C>                       <C>
NEGOTIABLE BANK CERTIFICATES OF DEPOSIT--13.8%                                               Amount ($)                Value ($)
- --------------------------------------------------------------------------------

Bayerische Landesbank Girozentrale (Yankee)


   5.16%, 7/23/1999                                                                           5,000,000                5,001,284


Branch Bank and Trust Co.


   5.04%, 1/10/2000                                                                           4,500,000                4,499,314


Deutsche Bank AG (Yankee)


   4.95%, 4/10/2000                                                                           5,000,000  (a)           4,998,292


TOTAL NEGOTIABLE BANK CERTIFICATES OF DEPOSIT


   (cost $14,498,890)                                                                                                 14,498,890
- ---------------------------------------------------------------------------------------------------------------------------------


COMMERCIAL PAPER--46.3%
- ---------------------------------------------------------------------------------------------------------------------------------


Associates First Capital Corp.


   5.60%, 7/1/1999                                                                            3,000,000                3,000,000


Countrywide Home Loans, Inc.


   5.00%, 8/20/1999                                                                           5,000,000                4,965,625


Daimler Chrysler NA Holdings


   4.90%, 7/29/1999                                                                           5,000,000                4,981,217


Den Norske Bank ASA


   4.91%, 7/14/1999                                                                           5,000,000                4,991,342


Finova Capital Corp.


   5.06%, 10/22/1999                                                                          5,000,000                4,922,940


Ford Motor Credit Corp.


   5.72%, 7/1/1999                                                                            3,000,000                3,000,000


Hertz Corp.


   4.94%, 7/23/1999                                                                           5,000,000                4,985,211


Monsanto Co.


   4.94%, 10/19/1999                                                                          5,000,000                4,926,361


Paine Webber Group Inc.


   5.08%, 7/6/1999                                                                            5,000,000                4,996,563


Lehman Brothers Holdings, Inc.


   5.40%, 8/5/1999                                                                            5,000,000                4,974,431


UBS Finance, Inc.


   5.60%, 7/1/1999                                                                            3,000,000                3,000,000


TOTAL COMMERCIAL PAPER


  (cost $48,743,690)                                                                                                  48,743,690
- ---------------------------------------------------------------------------------------------------------------------------------


CORPORATE NOTES--14.2%
- ---------------------------------------------------------------------------------------------------------------------------------


Bear Stearns Companies, Inc.


   5.09%, 2/22/2000                                                                           5,000,000  (a)           5,001,759


CIT Group Holdings, Inc.


   4.87%, 9/21/1999                                                                           5,000,000  (a)           4,999,671



<PAGE 6>


                                                                                              Principal
CORPORATE NOTES (CONTINUED)                                                                   Amount ($)              Value ($)
- --------------------------------------------------------------------------------

GTE Corporation


   5.20%, 6/12/2000                                                                           5,000,000  (a)           4,996,948


TOTAL CORPORATE NOTES


     (cost $14,998,378)                                                                                               14,998,378
- --------------------------------------------------------------------------------------------------------------------------------


SHORT-TERM BANK NOTES--19.0%
- -------------------------------------------------------------------------------------------------------------------------------


First Tennessee Bank


   4.93%, 4/19/2000                                                                           5,000,000  (a)           4,998,431


Key Bank N.A.


   4.97%, 10/15/1999                                                                          5,000,000  (a)           5,000,575


Lasalle National Bank


   4.91%, 10/12/1999                                                                          5,000,000                5,000,000


Societe Generale N.A. Inc.


   4.95%, 4/20/2000                                                                           5,000,000  (a)           4,997,992


TOTAL SHORT-TERM BANK NOTES


 (cost $19,996,998)                                                                                                   19,996,998
- --------------------------------------------------------------------------------------------------------------------------------


TIME DEPOSITS--6.0%
- ---------------------------------------------------------------------------------------------------------------------------------


Chase Manhattan Bank NA (Nassau)


   4.75%, 7/1/1999                                                                            3,266,000                3,266,000


Republic National Bank of NY (London)


   5.12%, 7/1/1999                                                                            3,000,000                3,000,000


TOTAL TIME DEPOSITS


   (cost $6,266,000)                                                                                                   6,266,000
- ---------------------------------------------------------------------------------------------------------------------------------


TOTAL INVESTMENTS


   (cost $104,503,956)                                                                            99.3%              104,503,956

CASH AND RECEIVABLES (NET)                                                                          .7%                  726,122

NET ASSETS                                                                                       100.0%              105,230,078
</TABLE>

(A)  VARIABLE INTEREST RATE--SUBJECT TO PERIODIC CHANGE.


SEE NOTES TO FINANCIAL STATEMENTS.

                                                             The Fund

<PAGE 7>


STATEMENT OF INVESTMENTS--

Government Securities Series

June 30, 1999 (Unaudited)

                                                               Annualized

                                                               Yield on

                                                           Date of  Principal

<TABLE>
<CAPTION>
<S>                                                                      <C>                     <C>                   <C>
U.S. TREASURY NOTES--55.3%                                               Purchase (%)            Amount ($)            Value ($)
- ---------------------------------------------------------------------------------------------------------------------------------

6.375%, 7/15/1999                                                                5.35            50,000,000           50,015,358

5.875%, 7/31/1999                                                                4.52            36,000,000           36,027,273

5.875%, 8/31/1999                                                                4.71            30,000,000           30,049,473

5.625%, 12/31/1999                                                               4.58            15,000,000           15,064,453

5.875%, 2/15/2000                                                                4.78            28,000,000           28,179,331

5.50%, 3/31/2000                                                                 4.66            25,000,000           25,113,739

5.50%, 5/31/2000                                                                 4.88            25,000,000           25,089,772

5.875%, 6/30/2000                                                                5.23             7,000,000            7,034,904


TOTAL U.S. TREASURY NOTES


   (cost $216,574,303)                                                                                               216,574,303
- ---------------------------------------------------------------------------------------------------------------------------------


REPURCHASE AGREEMENTS--43.3%
- --------------------------------------------------------------------------------


Bear Stearns & Co.
   dated 6/30/1999, due 7/1/1999 in the amount of
   $50,006,667 (fully collateralized by
   $52,921,000 U.S. Treasury Strips,
   due 2/15/2000-5/15/2000, value $50,431,930)                                   4.80            50,000,000           50,000,000

CIBC Oppenheimer Corp.
   dated 6/30/1999, due 7/1/1999 in the amount of
   $32,004,222 (fully collateralized by
   $26,669,000 U.S. Treasury Bill,
   due 11/26/1999, and $6,165,000 U.S. Treasury Notes,
   6.375%, due 5/15/2000, value $32,409,475)                                     4.75            32,000,000           32,000,000





<PAGE 8>


                                                                              Annualized

                                                                              Yield on

                                                                              Date of  Principal


REPURCHASE AGREEMENTS (CONTINUED)                                             Purchase (%)       Amount ($)            Value ($)
- ---------------------------------------------------------------------------------------------------------------------------------

C.S. First Boston Corp.
   dated 6/30/1999, due 7/1/1999 in the amount of
   $41,005,467 (fully collateralized by
   $41,409,000 U.S. Treasury Notes, 5.875%,
   due 11/15/1999, value $41,829,560)                                            4.80            41,000,000           41,000,000

Goldman Sachs & Co.
   dated 6/30/1999, due 7/1/1999 in the amount of
   $6,252,391 (fully collateralized by
   $6,710,000 U.S. Treasury Bills, due 6/22/2000,
   value $6,381,035)                                                             2.25             6,252,000            6,252,000

Morgan (J.P.) & Co. Inc.
   dated 6/30/1999, due 7/1/1999 in the amount of

   $40,005,278 (fully collateralized by
   $40,597,000 U.S. Treasury Notes, 5.50%,
   due 5/31/2000, value $40,792,706)                                             4.75            40,000,000           40,000,000

</TABLE>
<TABLE>
<CAPTION>

TOTAL REPURCHASE AGREEMENTS


   (cost $169,252,000)                                                                                               169,252,000
- --------------------------------------------------------------------------------------------------------------------------------
<S>                                                                             <C>                                  <C>
TOTAL INVESTMENTS (cost $385,826,303)                                           98.6%                                385,826,303

CASH AND RECEIVABLES ( NET)                                                      1.4%                                  5,448,703

NET ASSETS                                                                     100.0%                                391,275,006

</TABLE>

SEE NOTES TO FINANCIAL STATEMENTS.

                                                             The Fund

<PAGE 9>


STATEMENT OF ASSETS AND LIABILITIES

June 30, 1999 (Unaudited)

                                Money                 Government

                                Market                Securities

                                Series                Series
- -----------------------------------------------------------------------------
<TABLE>
<CAPTION>
ASSETS ($):


Investments in securities--See Statement of Investments
   (including repurchase agreements of $169,252,000
<S>                                                                           <C>                    <C>
   for the Government Securities Series)--Note 2(b)                           104,503,956            385,826,303

Cash                                                                              250,624              1,696,481

Interest receivable                                                               644,720              4,046,722

Prepaid expenses                                                                   14,799                     --

                                                                              105,414,099            391,569,506
- --------------------------------------------------------------------------------------------------------------------------------


LIABILITIES ($):

Due to The Dreyfus Corporation and affiliates                                    141,201                201,424

Accrued expenses and other liabilities                                            42,820                 93,076


                                                                                 184,021                294,500
- --------------------------------------------------------------------------------------------------------------------------------

NET ASSETS ($)                                                               105,230,078            391,275,006
- --------------------------------------------------------------------------------------------------------------------------------


COMPOSITION OF NET ASSETS ($):

Paid-in capital                                                              105,259,688            391,341,300

Accumulated net realized gain (loss) on investments                              (29,610)               (66,294)
- --------------------------------------------------------------------------------

NET ASSETS ($)                                                               105,230,078            391,275,006
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

NET ASSET VALUE PER SHARE

                                                                             Money                  Government

                                                                             Market                 Securities

                                                                             Series                 Series
- --------------------------------------------------------------------------------

Net Assets                                                                   105,230,078            391,275,006

Shares Outstanding                                                           105,243,188            391,341,300

NET ASSET VALUE PER SHARE                                                           1.00                  1.00

SEE NOTES TO FINANCIAL STATEMENTS.


<PAGE 10>


STATEMENT OF OPERATIONS

Six Months Ended June 30, 1999 (Unaudited)

                                                                               Money                Government

                                                                               Market               Securities

                                                                               Series               Series
- --------------------------------------------------------------------------------

INVESTMENT INCOME ($):

INTEREST INCOME                                                                 2,680,510            10,193,250

EXPENSES--NOTE 2:

Management fee--Note 3(a)                                                         264,314             1,051,885

Shareholder servicing costs--Note 3(b)                                            159,168               300,225

Registration fees                                                                  23,083                16,410

Professional fees                                                                  19,115                25,873

Custodian fees                                                                     11,654                35,934

Prospectus and shareholders' reports                                                8,407                16,533

Directors' fees and expenses--Note 3(c)                                             5,855                31,051

Miscellaneous                                                                          --                 2,102

TOTAL EXPENSES                                                                    491,596             1,480,013

INVESTMENT INCOME--NET                                                          2,188,914             8,713,237
- --------------------------------------------------------------------------------

NET REALIZED GAIN (LOSS) ON INVESTMENTS--NOTE 2(B) ($):                              (795)              (66,047)

NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS                            2,188,119             8,647,190
</TABLE>
<TABLE>
<CAPTION>

SEE NOTES TO FINANCIAL STATEMENTS.

                                                             The Fund

<PAGE 11>


STATEMENT OF CHANGES IN NET ASSETS

                                           Money Market Series                        Government Securities Series
                                     --------------------------------


                                   Six Months Ended                                    Six Months Ended

                                      June 30, 1999            Year Ended             June 30, 1999             Year Ended

                                        (Unaudited)          December 31, 1998          (Unaudited)          December 31, 1998
- --------------------------------------------------------------------------------------------------------------------------------


OPERATIONS:


Investment income--
<S>                                       <C>                      <C>                      <C>                    <C>
   net                                    2,188,914                5,316,204                8,713,237              20,107,437

Net realized gain
   (loss) on investments                      (795)                  (6,557)                 (66,047)                  36,250

NET INCREASE (DECREASE)
   IN NET ASSETS
   RESULTING FROM
   OPERATIONS                             2,188,119                5,309,647                8,647,190              20,143,687

DIVIDENDS TO
   SHAREHOLDERS
   FROM ($):

Investment income--
   net                                  (2,188,914)              (5,316,204)              (8,713,237)            (20,107,437)

Net realized gain on
   investments                                   --                       --                       --                (36,250)

TOTAL DIVIDENDS                         (2,188,914)              (5,316,204)              (8,713,237)            (20,143,687)

CAPITAL STOCK
   TRANSACTIONS
   ($1.00 per share) ($):

Net proceeds from
   shares sold                          152,170,434              270,802,602              672,817,949           1,295,087,820

Dividends reinvested                      1,399,834                3,521,681                4,818,158              11,359,817

Cost of shares
   redeemed                           (158,974,789)            (282,449,373)            (713,953,786)         (1,259,780,722)

INCREASE (DECREASE)
   IN NET ASSETS
   FROM CAPITAL STOCK
   TRANSACTIONS                         (5,404,521)              (8,125,090)             (36,317,679)              46,666,915

TOTAL INCREASE
   (DECREASE) IN
   NET ASSETS                           (5,405,316)              (8,131,647)             (36,383,726)              46,666,915


NET ASSETS ($):


Beginning of Period                     110,635,394              118,767,041              427,658,732             380,991,817

END OF PERIOD                           105,230,078              110,635,394              391,275,006             427,658,732
</TABLE>


SEE NOTES TO FINANCIAL STATEMENTS.


<PAGE 12>
<TABLE>
<CAPTION>

FINANCIAL HIGHLIGHTS-- Money Market Series

The  following tables describe the performance for the fiscal periods indicated.
Total  return  shows  how  much your investment in the fund would have increased
(or decreased) during each period, assuming you had reinvested all dividends and
distributions.  These  figures  have  been  derived  from  the  fund's financial
statements.

- --------------------------------------------------------------------------------

                                            Six Months Ended

                                              June 30, 1999                  Year Ended December 31,
                                                                   ------------------------------------------


                                                (Unaudited)      1998         1997        1996           1995          1994
- --------------------------------------------------------------------------------------------------------------------------------


PER SHARE DATA ($):

Net asset value,

   <S>                                                <C>        <C>           <C>            <C>           <C>           <C>
   beginning of period                                1.00       1.00          1.00           1.00          1.00          1.00


Investment Operations:


Investment income--net                                .017       .047          .047          .046           .053          .034


Distributions:

Dividends from investment


   income--net                                       (.017)     (.047)        (.047)        (.046)        (.053)        (.034)

Net asset value, end of period                        1.00       1.00          1.00          1.00          1.00          1.00
- ---------------------------------------------------------------------------------------------------------------------------------

TOTAL RETURN (%)                                      4.17((+))  4.76          4.76          4.73          5.46          3.42
- --------------------------------------------------------------------------------------------------------------------------------


RATIOS/SUPPLEMENTAL DATA (%):


Ratio of expenses to
   average net assets                                  .93((+))   .94          1.00           .93           .84           .88


Ratio of net investment income


   to average net assets                              4.14((+))  4.66          4.66          4.63          5.33          3.35

Decrease reflected in above
   expense ratios due to
   undertakings by the Manager                          --         --           .01            --            --           --
- --------------------------------------------------------------------------------------------------------------------------------

Net Assets, end of period
   ($ x 1,000)                                     105,230     110,635       118,767       129,344       144,172      170,548
</TABLE>
<TABLE>
<CAPTION>

((+))  ANNUALIZED.


SEE NOTES TO FINANCIAL STATEMENTS.

                                                             The Fund

<PAGE 13>


FINANCIAL HIGHLIGHTS-- Government Securities Series

                                                Six Months Ended

                                                June 30, 1999              Year Ended December 31,
                                                                    --------------------------------------------


                                                (Unaudited)          1998      1997          1996           1995          1994
- ---------------------------------------------------------------------------------------------------------------------------------


PER SHARE DATA ($):

Net asset value,

   <S>                                                <C>          <C>           <C>            <C>           <C>           <C>
   beginning of period                                1.00         1.00          1.00           1.00          1.00          1.00


Investment Operations:


Investment income--net                                .021         .047          .046           .045          .051          .033


Distributions:

Dividends from investment


   income--net                                       (.021)       (.047)         (.046)        (.045)        (.051)        (.033)

Net asset value, end of period                        1.00         1.00           1.00          1.00          1.00          1.00
- ---------------------------------------------------------------------------------------------------------------------------------

TOTAL RETURN (%)                                      4.17((+))    4.83           4.72          4.60          5.18          3.31
- ---------------------------------------------------------------------------------------------------------------------------------


RATIOS/SUPPLEMENTAL DATA (%):


Ratio of expenses to
   average net assets                                 .70((+))      .69            .87           .90           .83           .88


Ratio of net investment income


   to average net assets                             4.14((+))     4.71           4.62          4.50          5.07          3.24
- --------------------------------------------------------------------------------------------------------------------------------

Net Assets, end of period
   ($ x 1,000)                                     391,275  427,659  380,992   441,769        431,444       465,956

</TABLE>
((+))  ANNUALIZED.


SEE NOTES TO FINANCIAL STATEMENTS.


<PAGE 14>


NOTES TO FINANCIAL STATEMENTS (Unaudited)

NOTE 1--General:

Dreyfus  Money  Market  Instruments,  Inc.  (the "fund") is registered under the
Investment  Company  Act  of  1940,  as  amended  (the  "Act"), as a diversified
open-end  management investment company and operates as a series company issuing
two  classes  of  Common  Stock:  the  Money  Market  Series  and the Government
Securities  Series. The fund accounts separately for the assets, liabilities and
operations  of  each  series.  The  fund' s  investment  objective is to provide
investors  with  as  high  a  level  of current income as is consistent with the
preservation   of   capital  and  the  maintenance  of  liquidity.  The  Dreyfus
Corporation (the "Manager") serves as the fund's investment adviser. The Manager
is    a    direct    subsidiary    of    Mellon    Bank,    N.A.

Premier  Mutual  Fund  Services,  Inc.  is the distributor of the fund's shares,
which  are  sold to the public without a sales charge. The fund is authorized to
issue  5  billion  shares  of  $.01  par value Common Stock for the Money Market
Series  and  10 billion shares of $.01 par value Common Stock for the Government
Securities Series.

It  is  the  fund's policy to maintain a continuous net asset value per share of
$1.00  for  each  series;  the  fund  has  adopted certain investment, portfolio
valuation and dividend and distribution policies to enable it to do so. There is
no assurance, however, that the fund will be able to maintain a stable net asset
value per share of $1.00 for each series.

The  fund' s  financial  statements  are  prepared  in accordance with generally
accepted accounting principles which may require the use of management estimates
and assumptions. Actual results could differ from those estimates.

NOTE 2--Significant Accounting Policies:

(a) Portfolio valuation: Investments in securities are valued at amortized cost,
which has been determined by the fund's Board of Directors to represent the fair
value of the fund's investments.

(b)  Securities  transactions and investment income: Securities transactions are
recorded   on   a   trade   date   basis.  Realized  gain  and  loss   The  Fund

<PAGE 15>


NOTES TO FINANCIAL STATEMENTS (Unaudited) (CONTINUED)

from securities transactions are recorded on the identified cost basis. Interest
income  is  recognized  on  the  accrual  basis.  Cost of investments represents
amortized  cost.  Under  the  terms  of  the  custody  agreement, the Government
Securities  Series  received  net  earnings  credits of $1,597 during the period
ended  June  30,  1999  based on available cash balances left on deposit. Income
earned under this arrangement is included in interest income. Under the terms of
the  custody  agreement,  the  Money Market Series receives net earnings credits
based on available cash balances left on deposit.

The  fund  may  enter  into  repurchase  agreements with financial institutions,
deemed  to  be  creditworthy  by  the  fund' s  Manager, subject to the seller's
agreement  to repurchase and the fund's agreement to resell such securities at a
mutually   agreed   upon  price.  Securities  purchased  subject  to  repurchase
agreements are deposited with the fund's custodian and, pursuant to the terms of
the  repurchase  agreement,  must have an aggregate market value greater than or
equal  to  the repurchase price plus accrued interest at all times. If the value
of  the underlying securities falls below the value of the repurchase price plus
accrued  interest,  the  fund  will  require  the  seller  to deposit additional
collateral by the next business day. If the request for additional collateral is
not met, or the seller defaults on its repurchase obligation, the fund maintains
the  right  to  sell the underlying securities at market value and may claim any
resulting loss against the seller.

(c)  Expenses: Expenses directly attributable to each series are charged to that
series'  operations;  expenses which are applicable to both series are allocated
between them.

(d)  Dividends  to  shareholders:  It is the policy of the fund, with respect to
both  series,  to  declare dividends from investment income-net on each business
day;  such dividends are paid monthly. Dividends from net realized capital gain,
with  respect  to both series, are normally declared and paid annually, but each
series  may  make  distributions  on  a  more  frequent basis to comply with the
distribution  requirements of the Internal Revenue Code of 1986, as amended (the
"   Code"   ).

<PAGE 16>


However,  to the extent that a net realized capital gain of either series can be
reduced  by  a  capital  loss  carryover  of  that series, such gain will not be
distributed.

(e) Federal income taxes: It is the policy of each series to continue to qualify
as  a  regulated  investment  company,  if  such  qualification  is  in the best
interests  of  its  shareholders, by complying with the applicable provisions of
the  Code,  and to make distributions of taxable income sufficient to relieve it
from substantially all Federal income and excise taxes.

The  Money  Market  Series has an unused capital loss carryover of approximately
$29,000  availablefor  Federal  income tax purposes to be applied against future
net securities profits, if any, realized subsequent to December 31, 1998. If not
applied,  $18,000  of  the  carryover  expires in fiscal 2004, $4,000 expires in
fiscal 2005 and $7,000 expires in fiscal 2006.

At  June 30, 1999, the cost of investments of each series for Federal income tax
purposes was substantially the same as the cost for financial reporting purposes
(see the Statements of Investments).

NOTE 3--Management Fee and Other Transactions With Affiliates:

(a)  Pursuant  to  a  management  agreement  ("Agreement") with the Manager, the
management  fee  for  each series is computed at the annual rate of .50 of 1% of
the value of the average daily net assets of each series and is payable monthly.
The Agreement provides that if in any full fiscal year the aggregate expenses of
either series, exclusive of taxes, brokerage commissions, interest on borrowings
and extraordinary expenses, exceed 1% of the value of such series' average daily
net  assets, the fund may deduct from payments to be made to the Manager, or the
Manager  will  bear  the  amount  of  such  excess. No expense reimbursement was
required for the period ended June 30, 1999 pursuant to the Agreement.

                                                             The Fund

<PAGE 17>


NOTES TO FINANCIAL STATEMENTS (Unaudited) (CONTINUED)

(b)  Under the Shareholder Services Plan, each series reimburses Dreyfus Service
Corporation,  a  wholly-owned subsidiary of the Manager, an amount not to exceed
an  annual  rate  of  .25  of  1% of the value of each series' average daily net
assets  for  certain  allocated  expenses  of providing personal services and/or
maintaining  shareholder  accounts.  The  services provided may include personal
services  relating  to  shareholder  accounts,  such  as  answering  shareholder
inquiries  regarding  the  fund and providing reports and other information, and
services  related  to the maintenance of shareholder accounts. During the period
ended  June  30,  1999,  the  Money  Market Series and the Government Securities
Series  were  charged  $102,132  and  $204,197,  respectively,  pursuant  to the
Shareholder Services Plan.

The  fund  compensates  Dreyfus Transfer, Inc., a wholly-owned subsidiary of the
Manager,   under  a  transfer  agency  agreement  for  providing  personnel  and
facilities  to  perform transfer agency services for the fund. During the period
ended  June  30,  1999,  the  Money  Market Series and the Government Securities
Series,  were  charged  $49,796  and  $141,998,  respectively,  pursuant  to the
transfer agency agreement.

(c)  Each  director  who  is  not  an  "affiliated person" as defined in the Act
receives from the fund an annual fee of $4,500 and an attendance fee of $500 per
meeting.  The  Chairman  of  the  Board  receives  an  additional  25%  of  such
compensation.


<PAGE 18>


NOTES

<PAGE 19>


                                                           For More Information

                        Dreyfus

                        Money Market

                        Instruments, Inc.

                        200 Park Avenue

                        New York, NY 10166

                        Manager

                        The Dreyfus Corporation

                        200 Park Avenue

                        New York, NY 10166

Custodian

The Bank of New York

90 Washington Street

New York, NY 10286

Transfer Agent &

Dividend Disbursing Agent

Dreyfus Transfer, Inc.

P.O. Box 9671

Providence, RI 02940

Distributor

Premier Mutual Fund Services, Inc.

60 State Street

Boston, MA 02109

To obtain information:

BY TELEPHONE Call 1-800-645-6561

BY MAIL Write to:  The Dreyfus Family of Funds 144 Glenn Curtiss Boulevard
Uniondale, NY 11556-0144

BY E-MAIL Send your request to [email protected]

ON THE INTERNET Information can be viewed online or downloaded from:

http://www.dreyfus.com

(c) 1999 Dreyfus Service Corporation                              008/060SA996



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