UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13G

                   Under the Securities Exchange Act of 1934
                                (Amendment No. )*

                    SEACOAST FINANCIAL SERVICES CORPORATION
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                                 COMMON STOCK
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   81170Q106
- --------------------------------------------------------------------------------
                                 (CUSIP Number)

                               DECEMBER 31, 1999
- --------------------------------------------------------------------------------
           (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

      [X  ]    Rule 13d-1(b)
      [   ]    Rule 13d-1(c)
      [   ]    Rule 13d-1(d)

Check the following box if a fee is being paid with this statement [X]. (A fee
is not required only if the filing person: (1) has a previous statement on file
reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7).

*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 the
disclosures provided in a prior cover page.

The information required in 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 (the "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).


                               Page 1 of 5 pages


CUSIP No. 81170Q106


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

  1    NAME OF REPORTING PERSON
       I.R.S. IDENTIFICATION NO. OF ABOVE PERSON  (entities only)

       Perkins, Wolf, McDonnell & Company
       ID No. 36-3099763

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

  2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP   (SEE INSTRUCTIONS)

       N/A                                                (a) [    ]

                                                          (b) [    ]
- --------------------------------------------------------------------------------

  3    SEC USE ONLY
- --------------------------------------------------------------------------------

  4    CITIZENSHIP OR PLACE OF ORGANIZATION

       Delaware
- --------------------------------------------------------------------------------

                   5  SOLE VOTING POWER

                                  -0-
 NUMBER OF SHARES
   BENEFICIALLY    -------------------------------------------------------------
  OWNED BY EACH
 REPORTING PERSON  6  SHARED VOTING POWER
       WITH
                                  1,590,000
                   -------------------------------------------------------------

                   7  SOLE DISPOSITIVE POWER

                                  -0-
                   -------------------------------------------------------------

                   8  SHARED DISPOSITIVE POWER

                                 1,590,000
- --------------------------------------------------------------------------------

  9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                                 1,590,000
- --------------------------------------------------------------------------------

  11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                                 5.9%
- --------------------------------------------------------------------------------

  12   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

                                 IA
- --------------------------------------------------------------------------------



                               Page 2 of 5 pages





ITEM 1(A).  NAME OF ISSUER:
- --------------------------

Seacoast Financial Services Corporation

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

791 Purchase Street, New Bedford, MA 02740

ITEM 2(A).  NAME OF PERSON FILING:
- ---------------------------------

Perkins, Wolf, McDonnell & Company

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

53 W. Jackson Blvd., Suite 722
Chicago, IL  60604

ITEM 2(C).  CITIZENSHIP:
- -----------------------

Delaware

ITEM 2(D).  TITLE OF CLASS OF SECURITIES:
- ----------------------------------------

Common Stock

ITEM 2(E).  CUSIP NUMBER:
- ------------------------

81170Q106

ITEM 3.  IF THIS STATEMENT IS FILED  PURSUANT TO RULES 13D-1(B) OR 13D-2(B),
         CHECK WHETHER THE PERSON FILING IS A:
- ----------------------------------------------------------------------------

(e)  [X]    Investment Adviser

ITEM 4.  OWNERSHIP:
- ------------------

   (a)      Amount Beneficially Owned: 1,590,000

   (b)      Percent of Class:  5.9%

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

            (i)      sole power to vote or to direct the vote -  -0-

            (ii)     shared power to vote or to direct the vote -  1,590,000



                               Page 3 of 5 pages


            (iii)    sole power to dispose or to direct the  disposition  of -
                     -0-

            (iv)     shared power to dispose or to direct the  disposition  of
                     - 1,590,000

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

         N/A

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

         N/A

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

         N/A

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

         N/A

ITEM 9.  NOTICE OF DISSOLUTION OF GROUP:
- ---------------------------------------

         N/A

ITEM 10. CERTIFICATION:
- ----------------------

By signing below I certify that, to the best of my knowledge and belief, the
securities referred to above were acquired in the ordinary course of business
and were not acquired for the purpose of and do not have the effect of changing
or influencing the control of the issuer of such securities and were not
acquired in connection with or as a participant in any transaction having such
purposes or effect.



                               Page 4 of 5 pages




                                    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 9, 2000




                                             /S/ GREGORY E. WOLF
                                             Gregory E. Wolf
                                             Treasurer







                               Page 5 of 5 pages