Notes on North American Crustacea. 79 



licpidopa scutellata. 



Albuncea scutellata, Desm.', Crust, p. 173. 



" « M.-Edw. ; Hist. Nat. des Crust, ii. 204. 



« « Gibbes ; loc. cit. 187. 



Inhabits the shores of the Island of St. Thomas ;— A. H. 

 Riise. 



I^epidopa renusta, nov. sp. 



Carapax glabrous, of a silvery hue with bluish reflections in specimens 

 preserved in spirits. The markings of the dorsal surface of the carapax 

 are less profound and less numerous than in L. scutellata, and the prin- 

 cipal transverse sulcus is nearly straight, and not undulated as in that 

 species. Front tridentate ; lateral teeth situated at about half-way 

 between the median one and the lateral angles, and consequently nearer 

 the median one than in L. scutellata. Ocular peduncles large, oval, 

 diverging, and a little thickened below along the middle ; — the minute 

 eye being situated on the inferior surface near the extremity. Antennulae 

 slender, with flagella more than five times as long as the carapax. Feet 

 nearly as in L. scutellata, but the dactylus of the second pair is more 

 sharply excised, and the dactyli of the following pairs are more slender. 



Length of the carapax, 0-43 ; greatest breadth, 0'54. 



Found at St. Thomas by A. H. Kiise. 



LITHODIDEA. 

 Echidnocerus foraminatus. 



Body depressed. Upper surface of carapax and feet sharp-tubercu- 

 lated, and minutely setose as in JE. cibarius. Carapax subpentagonal, 

 with the sides more sinuated in the hepatic and branchial regions. 



