Notes on North American Crustacea. 59 



thi mero sat brevi, palpo endarthroideo. Chelipedes breves, crassi. 

 Pedes ambulatorii graciles, la3ves, dactylis depressis, ciliatis. Vergulse 

 sternales. Abdomen maris ei Panopei simile sed ad basin sterno multo 

 angustius, et scgmentis tertio ad quinto coalitis. 



This genus seems to be nearest allied to Eucrate^ as described 

 by Dana, from wliicli it is distinguished by the greater breadth 

 of the sternum posteriorly, and by the gaping of the maxil- 

 lipeds. 



Speocarcinii!^ caroliiieii§is. 



Plate I; figs. 1, 2, and 3. 



Body depressed, subcylindrical. Carapax above nearly smooth ; sur- 

 face punctate, obsoletely granulated toward the margins; gastric region 

 well defined ; genital region depressed. Antero-lateral margin five- 

 toothed, including angle of orbit ; second tooth not distinctly separated 

 from the first; last three teeth sharp and moderately prominent. Front 

 about one-fourth as wide as the carapax, sufficiently prominent, straight, 

 and emarginate at the middle. Eye-peduncles depressed and pubescent 

 above. Chelipeds robust, nearly smooth ; a strong sharp tooth or spine 

 near summit of meros ; inner margin of carpus granulated, with a blunt 

 tooth at inner angle ; outer surface of hand glabrous, microscopically 

 granulated. Tarsi sharp ; those of last pair curved upward. Length of 

 carapax in the male, 0"88 ; breadth 1"09 inch. 



This crab lives in the subterranean galleries excavated in the 

 mud at low water mark by the Squilla, Callianassa, and other 

 Crustacea, or by large worms. It is found in the harbor of 

 Charleston, S. C. 



Prionoplax s|>isiicai*j>us. 



Prionoplax spinicarjms, M.-Edw. ; Ann. des Sc. Nat., 3me. Serie, ZooL, 

 xviii. 161 ; Archives du Mus. d'llist. 

 Nat., vii. 167, pi. xi., f. 3. 



Milne-Edwards gives, with a doubt, China as the habitat of 



