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), Beroe 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 ol the ctenophore Be-ol 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. 
Our 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 
