Section 1204. Respondents

  There shall be named as respondents:
    (a)  All last known owners or claimants as disclosed by the records of
  such court, provided however that if (1) the particular  fund  does  not
  exceed five hundred dollars, or (2) such last known owners or claimants,
  with  respect  to  a  particular  fund, exceed ten in number, or (3) the
  records of such court fail to disclose the number of owners or claimants
  with respect to a particular fund with a reasonable degree of certainty,
  they may be designated and described as a class, to wit, as "last  known
  owners  or  claimants to the fund or property deposited to the credit of
  the following entitled actions  or  proceedings  in  the  United  States
  District  Court for the .............. District of New York: (naming the
  actions and proceedings by their titles as  appearing  on  the  original
  process  which  instituted  such  actions or proceedings, or by suitable
  abbreviations thereof, which shall sufficiently  describe  such  actions
  and proceedings); and
    (b)  All  unknown  owners  or  claimants,  who  may  be designated and
  described as "unknown owners  or  claimants  to  the  fund  or  property
  deposited to the credit of the following entitled actions or proceedings
  in the United States district court for the ............ district of New
  York:  (naming  the actions and proceedings by their titles as appearing
  on the original process which instituted such actions or proceedings, or
  by suitable abbreviations thereof,  which  shall  sufficiently  describe
  such actions and proceedings)."