SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 8-A/A

                For Registration of Certain Classes of Securities
                     Pursuant to Section 12(b) or (g) of the
                         Securities Exchange Act of 1934

                                 BBN Corporation
              ----------------------------------------------------
             (Exact name of registrant as specified in its charter)

                                  Massachusetts
                 ----------------------------------------------
                 (State or other jurisdiction of incorporation)

             I-6435                                     04-2164398
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(Commission File Number)                 (I.R.S. Employer Identification Number)

             150 CambridgePark Drive, Cambridge, Massachusetts 02140
             -------------------------------------------------------
               (Address of principal executive offices) (zip code)

       Registrant's telephone number, including area code: (617) 873-2000

       Bolt Beranek and Newman Inc. 10 Fawcett Street Cambridge, MA 02238
       ------------------------------------------------------------------
         (Former name or former address, if changed since last report.)


        Securities to be registered pursuant to Section 12(b) of the Act:


                          Common Stock Purchase Rights
              -----------------------------------------------------
                                (Title of class)

                             New York Stock Exchange
                  ---------------------------------------------
                   (Name of each exchange on which each class
                              is to be registered)

        Securities to be registered pursuant to Section 12(g) of the Act:



                                      None
                        --------------------------------
                                (Title of class)




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Item 1.  Description of Registrant's Securities to be Registered.
         --------------------------------------------------------

         Item 1 of the Form 8-A is hereby  amended so as to read in its entirety
as follows:

         On June 23, 1988,  BBN  Corporation  f/k/a Bolt Beranek and Newman Inc.
(the  "Company")  declared a dividend  distribution of one common stock purchase
right (a "Right";  collectively,  the "Rights") for every  outstanding  share of
Common  Stock,  $1.00  par value  (the  "Common  Stock"),  of the  Company.  The
distribution  was  payable  on July 15,  1988 (the  "Dividend  Record  Date") to
shareholders of record at the close of business on the Dividend Record Date. The
description  and  terms of the  Rights  are set forth in a Common  Stock  Rights
Agreement  between the Company and The First National Bank of Boston,  as Rights
Agent (the "Rights Agent"), as amended by an Amendment No. 1 to the Common Stock
Rights Agreement dated May 5, 1997 (collectively,  the "Rights Agreement").  The
Rights  Agreement  contemplates  the  issuance  of one Right for every  share of
Common Stock issued and  outstanding  on the  Dividend  Record Date.  The Rights
Agreement also  contemplates  the issuance of one Right for each share of Common
Stock  which is  issued on or after the  Dividend  Record  Date and prior to the
Distribution  Date (as that term is defined below),  subject to the existence on
the date of issuance of such Rights of a  sufficient  number of shares of Common
Stock which are authorized by the Company's  charter but are not  outstanding or
reserved for issuance for purposes other than upon exercise of the Rights issued
on such date,  to permit the exercise in full of all Rights to be issued on such
date. Each Right entitles the registered holder to purchase from the Company one
share of Common  Stock at a price of $90.00  per share (the  "Purchase  Price"),
subject to adjustment.

         Initially,  the Rights will attach to all outstanding  shares of Common
Stock,  and no  separate  Rights  Certificates  will be issued.  The Rights will
separate  from the Common  Stock upon the earlier to occur of (i) the date which
is the 10th  business  day  following  a public  announcement  that a person  or
affiliates or associates of such person (an "Acquiring Person") has acquired, or
obtained the right to acquire,  beneficial ownership  (determined as provided in
the Rights  Agreement) of 20% or more of the outstanding  shares of Common Stock
(the "Stock  Acquisition  Date"),  or (ii) the 10th  business day  following the
commencement  or announcement of an intention to make a tender offer or exchange
offer which would result in a person or its affiliates or associates  owning 30%
or more of the outstanding  Common Stock (the earlier of such dates being called
the "Distribution  Date"). Until the Distribution Date (or earlier redemption or
expiration of the Rights),  (i) the Rights will be evidenced by the Common Stock
certificates  and will be  transferred  with and only  with  such  Common  Stock
certificates,  (ii) new Common  Stock  certificates  issued  after the  Dividend
Record Date upon  transfer or new  issuance of the  Company's  Common Stock will
contain a notation  incorporating  the Rights Agreement by reference,  and (iii)
the  surrender for transfer of any of the  Company's  Common Stock  certificates
will also constitute the transfer of the Rights associated with the Common Stock
represented  by  such  certificate.   As  soon  as  practicable   following  the
Distribution Date, if any, separate  certificates  evidencing the Rights ("Right
Certificates") will be mailed to holders of record of the Company's Common Stock
as of the

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close of business on the Distribution Date and such separate Right  Certificates
alone will evidence the Rights.

         The Rights are not exercisable until the Distribution  Date. The Rights
will expire on June 23, 1998 (the "Expiration Date").

         The  Purchase  Price  payable,  and the  number of whole or  fractional
shares of the  Common  Stock or other  securities  or  property  issuable,  upon
exercise  of the Rights are subject to  adjustment  from time to time to prevent
dilution (i) in the event of a stock dividend on, or a subdivision, combination,
or reclassification  of, the Common Stock, (ii) upon the grant to holders of the
Common Stock of certain rights or warrants to subscribe for shares of the Common
Stock or  convertible  securities  at less than the current  market price of the
Common Stock,  or (iii) upon the  distribution to holders of the Common Stock of
evidences of indebtedness or assets (excluding  regular quarterly cash dividends
out of the  earnings or retained  earnings  of the  Company) or of  subscription
rights or warrants (other than those referred to above.)

         In the event that, at any time  following the Stock  Acquisition  Date,
the Company were acquired in a merger or other business  combination (other than
a merger  described in the  following  sentence) or 50% or more of its assets or
earning  power  were sold,  proper  provision  shall be made so that,  except as
described in the last sentence of this  paragraph,  each holder of a Right shall
thereafter  have the right to  receive,  upon the  exercise  thereof at the then
current exercise price of the Right,  that number of whole or fractional  shares
of common  stock of the  acquiring  company  (or,  in the event of a transfer of
assets or earning power involving more than one acquiring company, the acquiring
company   receiving  the  greatest  portion  of  the  assets  or  earning  power
transferred)  which at the time of such transaction would have a market value of
two times the  exercise  price of the  Right.  In the  event  that,  at any time
following the  Distribution  Date (but before the events  described in the first
sentence),  (i) the Company were the surviving  corporation  in a merger with an
Acquiring  Person and its Common  Stock were not changed or  exchanged,  (ii) an
Acquiring  Person engages in one of the self-dealing  transactions  specified in
the Rights Agreement, or (iii) during such time as there is an Acquiring Person,
(A) an event  occurs  which  results in such  Acquiring  Person's  proportionate
ownership  interest  being  increased  by more than 1% or (B)  there  shall be a
reduction  in the annual rate of  dividends  paid on the shares of Common  Stock
(except  as  approved  by a  majority  of the  "Continuing  Directors"),  proper
provision  shall be made so that,  except as described  in the last  sentence of
this paragraph, each holder of a Right will thereafter have the right to receive
upon exercise that number of whole or fractional shares of the Common Stock (or,
in certain  circumstances,  cash, property,  or other securities of the Company)
having a market  value of two times the  exercise  price of the Right.  The term
"Continuing  Directors" is defined in the Rights  Agreement as a director of the
Company who is not an affiliate or associate of an Acquiring  Person and who was
a member  of the  Board of  Directors  of the  Company  on June 23,  1988 or was
recommended for election by a majority of the Continuing  Directors in office at
the time of nomination.  Upon the  occurrence of any of the events  described in
this paragraph (as defined in the Rights Agreement, a "Common Stock Event"),

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any Rights that are, or (under  certain  circumstances  specified  in the Rights
Agreement) were,  beneficially  owned by an Acquiring  Person shall  immediately
become null and void.

         With certain  exceptions,  no adjustment in the Purchase  Price will be
required until  cumulative  adjustments  require an adjustment of at least 1% in
such Purchase Price. The Company is not obligated to issue fractional  shares of
any  securities  and,  in lieu  thereof,  at the  election  of the  Company,  an
adjustment  in cash may be made based on the market price of such  securities on
the last trading date prior to the date of exercise.

         At any time prior to the Expiration Date, the Company,  by a two-thirds
vote of the Continuing Directors, may redeem the Rights at a redemption price of
$.01 (the "Redemption Price"), as described in the Rights Agreement. Immediately
upon the action of the  Continuing  Directors of the Company  electing to redeem
the Rights, the Company shall make a public announcement  thereof, and upon such
election,  the right to exercise the Rights will terminate and the only right of
the holders of Rights will be to receive the Redemption Price.

         Until a Right is exercised,  the holder thereof,  as such, will have no
rights as a shareholder of the Company, including, without limitation, the right
to vote or to receive dividends.

         While the Company  believes that neither the distribution of the Rights
nor the subsequent  separation of the Rights on the Distribution  Date should be
taxable to stockholders,  stockholders  may,  depending upon the  circumstances,
recognize  taxable income upon the  occurrence of a Common Stock Event.  Neither
the distribution of the Rights nor the subsequent  separation of the Rights will
be taxable to the Company.

         The Rights Agreement may be amended in order to cure any ambiguity,  to
make changes which do not  adversely  affect the interests of holders of Rights,
or to change any time period for redemption  under the Rights  Agreement.  After
the Stock Acquisition Date, amendments require the approval of two-thirds of the
Continuing Directors.

         The form of Common Stock Rights  Agreement,  dated as of June 23, 1988,
between the  Company and The First  National  Bank of Boston,  as Rights  Agent,
specifying  the terms of the Rights  (including  as  exhibits  the form of Right
Certificate and the Summary of Rights) is attached as an exhibit to the Form 8-A
filed by the Company on June 23, 1988 and is  incorporated  herein by reference.
The form of Amendment No.1 to the Common Stock Rights Agreement, dated as of May
5, 1997,  between  the Company and the Rights  Agent,  is attached  hereto as an
exhibit and is incorporated herein by reference. Such Amendment amends the terms
of the Rights by (a) excluding from the definition of an "Acquiring  Person" any
Person who or which, together with all Affiliates,  becomes the Beneficial Owner
of 20% or more of the  outstanding  shares of Common Stock of the Company solely
as a result of the  transactions  relating to and  contemplated by the Agreement
and Plan of  Merger  dated  as of May 5,  1997 by and  among  the  Company,  GTE
Corporation  and an  acquisition  subsidiary  of GTE  Corporation  (the  "Merger
Agreement"), and (b) amending the definition of "Offer

                                       -4-






Commencement  Date" to exclude the date of commencement  of, or the first public
announcement  of the intent of GTE  Corporation or any of its Affiliates  acting
pursuant to the terms of the Merger  Agreement  to commence a tender or exchange
offer if upon  consummation  thereof GTE  Corporation  or any of its  Affiliates
would be the Beneficial Owner of 30% or more of the then  outstanding  shares of
Common Stock.

         As of May 5,  1997,  there  were  21,230,097  shares  of  Common  Stock
outstanding.  As of May 5, 1997  there  were  3,733,729  shares of Common  Stock
reserved for issuance  upon  exercise of  outstanding  Options  (both vested and
unvested);  2,823,000 shares of Common Stock reserved for issuance upon exercise
of the  Company's 6%  Convertible  Subordinated  Notes due 2012;  and  4,225,000
shares of Common Stock  reserved for issuance upon  exercise of the  Termination
Option as defined in Section 8.2 of the Merger Agreement.  As long as the Rights
are  attached to the Common  Stock,  the Company  will issue one Right with each
newly  issued  share of Common  Stock,  including  any such shares  which may be
issued  pursuant  to  employee  benefit  plans  and  the  Company's  contractual
commitments,  so that all shares of Common Stock outstanding on the Distribution
Date will have attached  Rights.  As of May 5, 1997,  the Company has 21,230,097
Rights  outstanding  and has  reserved  21,230,097  shares of  Common  Stock for
issuance upon exercise of those Rights.

         The Rights may be deemed to have  certain  anti-takeover  effects.  The
Rights  will  cause  substantial  dilution  to a  person  or its  affiliates  or
associates  that  attempts to acquire  the Company on terms not  approved by the
Continuing  Directors,  except pursuant to an offer conditioned on a substantial
number of Rights being  acquired.  The Rights should not interfere with a merger
or other business  combination approved by the Continuing  Directors,  since the
Continuing  Directors,  by a two-thirds  vote, may amend the Rights Agreement or
redeem the Rights as described above.

         The foregoing description of the Rights does not purport to be complete
and is qualified in its entirety by reference to such exhibits.

Item 2.  Exhibits.
         ---------

         The following  exhibits are filed  herewith as set forth in the Exhibit
Index of this Report (or incorporated by reference as indicated below):

                  1.   Common Stock Rights Agreement dated as of June 23, 1988
                       between the Company and The First National Bank of
                       Boston, as Rights Agent, incorporated by reference to
                       Exhibit 1 to the Company's Registration Statement on Form
                       8-A (Commission File No. 1-6435).

                  2.   Form of Right Certificate, incorporated by reference to
                       Exhibit 2 to the Company's Registration Statement on Form
                       8-A (Commission File No. 1-6435).


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                  3.   Summary of Common Stock Purchase Rights, incorporated by
                       reference to Exhibit 3 to the Company's Registration
                       Statement on Form 8-A (Commission File No. 1-6435).

                  4.   Amendment No.1 to Common Stock Rights Agreement dated as
                       of May 5, 1997 between the Company and The First National
                       Bank of Boston, as Rights Agent.

                                       -6-







                                    SIGNATURE

Pursuant to the  requirements  of Section 12 of the  Securities  Exchange Act of
1934, the registrant has duly caused this registration statement to be signed on
its behalf by the undersigned thereunto duly authorized.

                                                 BBN Corporation

Dated:  May 12, 1997                             By:   /s/ Paul F. Brauneis
                                                       Paul F. Brauneis
                                                       Vice President
                                                       and Corporate Controller


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                                  EXHIBIT INDEX


The following designated exhibits are filed herewith:

Exhibit
- -------

     1. Amendment No. 1 to Common Stock Rights Agreement dated as of May 5, 1997
        between the Company and The First National Bank of Boston, as Rights
        Agent.



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