140 BULLETIN OF THE BUREAU OF FISHERIES 
Pratt and Sharpe recorded them as occurring in great abundance. No specimens 
have been placed in the National Museum, and as Sharpe's collections were lost I 
have been unable to find any identified material. It seems strange, however, that a 
species not recorded from the region appeared in such great abundance, while the 
common form was absent during those three years. 
On July 28, 1923, Podon polypTiemoides appeared in the surface tow. No 
specimens of this species had been observed in the collections of the previous year 
or in 1899 to 1900. The season was very short, lasting less than four weeks. The last 
specimen was taken on August 22. At the mouth of New Haven Harbor in Long 
Island Sound, August 1 to 3, 1923, swarms of this species were observed. They 
A. 
S. 
v.s. 
Fig. 38.— Occurrence of Phyllopoda in surface collections of 1923. , Podon intermedius; , , — , P. polyphemoides; 
. , Etadne noTdmanni; , E. tergestim 
were so numerous that a surface tow of 15 minutes yielded 80 c. c. of P. polypJiemoides 
and almost nothing else. 
The following phyllopods appeared in the surface collections of 1922-23 : Podon 
intermedius Lilljeborg, P. polyphemoides (Leuckart), Evadne nordmanni Loven, 
and E. tergestina Glaus. 
OSTRACODA 
With few exceptions the ostracods are not true planktonic animals. None of 
the Woods Hole species belong in the pelagic group, although many appear in sur- 
face collections after storms or hard winds, along with particles of sand, Foramini- 
fera, and other bottom forms. 
Cushman found that, excepting one specimen, all species of the Myodocopa 
taken in the survey of Vineyard Sound and Buzzards Bay came from the " Gut of 
Canso," directly across the harbor from the fisheries station. 
