PLANKTON OF THE GULF OF MAINE 
157 
the summer of 1915” (Bigelow, 1917, p. 286), as well as over the southwest part of 
Georges Bank in July, 1916 (stations 10351 and 10353), which substantiates the 
tow nettings made by vessels of the Bureau of Fisheries in past years. 
records for E. compressa] 0> locality records for E. bispinosa ; ©, locality records for both species together. The large 
symbols are for the more notable swarms 
This zone of abundance can hardly extend out beyond the continental edge, 
for, generally speaking, we have found Euthemisto decidedly less common over the 
continental slope and rare at the deep stations where the plankton is characterized 
8951—28 11 
