PLANKTON OF THE GULP OF MAINE 



183 



1911). It seems not to enter the Baltic, probably being barred therefrom by low- 

 salinity. It is recorded from the Indian Ocean, doubtfully from the Pacific (Gies- 

 brecht and Schmeil, 1898), and from the Black Sea (van Breemen, 1908). Off the 



Portland 



7V 



Fig. 62. — Occurrence of the copepods JStidiua armatus and Candacia armata. X, locality records for Mlidius armatus: #, 

 locality records for Candacia armata. The hatched curve incloses the zone where tropical-oceanic species occur most 

 frequently 



North American seaboard it has been reported from the Gulf of St. Lawrence (T. 

 Scott, 1905; Herdman, Thompson, and Scott, 1898; and Willey, 1919); off Halifax 

 and Shelburne, Nova Scotia (Willey, 1919); at many localities in the Gulf of Maine; 



