BIGELOW: COAST WATER EXPLORATION OF 1913. 



303 



The pteropods and heteropods of the cruise fall into two distinct 

 groups, Limacina balea and Clione limacina in one; Corolla, Crescis 

 acicula, C. conica, C. virgula, Limacina inflata, Pterotrachea, Firoloida, 

 and Atlanta pcronii in the other. Limacina balea, by far the common- 

 est species, was universal from the neighborhood of Gloucester as far 

 as Station 10065; and was taken again at nearly all our Gulf of Maine 

 Stations. But it was wholly lacking in all the southern stations, and 

 even in the cool water off New York (Stations 10066 to 10083, fig. 

 72). Its bathymetric range, likewise, must have been somewhat 

 circumscribed, for, as the table shows, it was only once taken on the 

 surface (Station 10103), although a surface haul was made at every 

 station, usuallv with a net of the same mesh as the one in which Lima- 



