PLANKTON OP THE GULF OF MAINE 159 
it was noted at only one of the stations (10287) inside the 100-meter contour along 
the eastern coast of Maine. 
Fig. 56. — Occurrence of the amphipod genus Euthemisto from February to April, 1920. 0 , locality records for Eutliemisto 
compressa: O, locality records for E. compressa and E. bispinosa; O, stations where neither occurred; X, locality records 
for larvse too young for identification as the one species or the other. 
Euthemisto thus exhibits a more or less definite summer and early autumn 
maximum contrasted wfth an early spring minimum in the Gulf of Maine, disappear- 
ing from the coastal zone, as its numbers dwindle in late winter or early spring, to 
