MARINE ISOPODA OF NEW ENGLAND, ETC. 



413 



but bis Pranisa Reinhardi differs in its proportions of the antennary 

 segments from G. cerina. 



This species was described by Dr. Stimpson from females " dredged 

 on gravelly and coralline bottoms in 20-30 fathoms in the Hake Bay," 

 and males " dredged on a sandy bottom in 10 fathoms off Cheney's 

 Head," Grand Menan, in the Bay of Fundy. It has been collected by 

 the U. S. Fish Commission in Massachusetts Bay !, off Salem, 22-50 

 fathoms, gravel and soft mud ; Gulf of Maine !, at several localities ; Casco 

 Bay !, 50 fathoms ; Bay of Fundy !, in many localities, 10 to 60 fathoms, 

 rocks, stones, and mud, and young specimens have been taken adhering 

 to codfish and the sculpin. It was dredged by Mr. J. F. Whiteaves in 

 the Gulf of St. Lawrence!, in 220 fathoms, mud. Further details in 

 regard to localities are given in the subjoined table. 



Specimens examined. 



XIV. TANAIDJB. 



Eespiration cephalothoracic, taking place in a cavity beneath the 

 walls of the united head and first thoracic segment; eyes, when present, 

 articulated ; antemmlar fl agellum single ; first pair of legs enlarged and 

 more or less perfectly chelate; pleopods natatory, ciliated, not branchial ; 

 uropods, terete, terminal, with at least one jointed ramus. 



