§ 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)."