PLANKTON OF THE GULF OF MAINE 



461 



These scattered records point to late summer and early autumn as its season 

 of greatest abundance in the Gulf of Maine, and they suggest, though hardly prove, 

 that its chief center of distribution lies in the western part of the gulf with a second- 



Fio. 132.— Locality records for Acanthometron, 1914 to 1920. O. August, many; JL August, few; 

 ■• September, few; X, October, few; A, April, occasional 



September, many; 



ary center somewhere off southern Nova Scotia, for which its presence off Shel- 

 burne on September 6, 1915, is evidence. Furthermore, the areas of abundance 

 for Acanthometron have been small in extent, with neighboring stations yielding 



