PLANKTON OF THE GULF OF MAINE 



373 



as well as Arctic — indifferently on the high seas and in such inland waters as the 

 Baltic (Mortensen, 1912; Kramp, 1913), Bero'e cucumis was to be expected in the 

 central parts of the Gulf of Maine as well as in its coastal belt; but it was only with 



Fig. 102.— Occurrence of the ctenophore Bcroe cucumis in the Gulf of Maine since 1912. #, locality records, July to Sep- 

 tember 15; O. November through February*; X, March and April; A, May and June 



the inception of the present explorations that definite information of its presence 

 and distribution there was obtained. 



Out locality records for Beroe (fig. 102) show that it is universal in the gulf north 

 of Georges Bank, with the actual captures distributed indifferently over the deep 



