REPORT ON THE BRACHYURA. 287 



smooth. Abdomen narrower across the third segment than 

 in typicus; sixth segment narrower than in that species, and 

 with parallel sides. 



Merus of chelipeds with the lower margin spinous; carpus 

 with a long slender spine. Chelipeds nearly equal, in the im- 

 mature male, fingers slightly deflexed as in the left hand of 

 typicus, not gaping, prehensile margins finely denticulate; 

 dactylus of the right cheliped with a basal tooth. Ambula- 

 tory legs more slender, less flattened than in typicus. The 

 legs are detached. The last two joints have a fringe of long 

 hair. 



Dimensions. — Male, length 5.3, width 5.9 mm. 



Type locality. — Southeast of Andros Island, Bahamas, in 

 Tongue of Ocean, 97 fathoms, station 2651, ''Albatross," one 

 immature male (U. S. Nat. Mus. No. 20509). 



104. OCYPODE ARENARIA Say. 



Tortugas; Loggerhead Key; Egg Island, Bahamas. 



105. Frevillea barbata A. Milne Edwards? 

 Off Havana. 



One young male, soft shell, mutilated, about 3 mm. long 

 and 4 wide, is perhaps referable to this species, of which I 

 have seen no examples. The sides of the carapace converge 

 posteriori)-. The post-orbital angle is marked by a slender 

 curved spine; behind the spine is one feebly marked tooth. 

 The front is about 1 y 2 mm. wide and is faintly bilobed. 

 Superior orbital margin sinuous, directed obliquely backward 

 to the orbital spine. Eyes very large, as in young Ocyftode, 

 extending laterally beyond the carapace. The single cheliped 

 (with fingers broken off) is smooth. The carpus has a short 

 inner spine. 



Frevillea quadridentata sp nov. PL vm. Fig. 1. 



JLaleral teeth four ; sides converging posteriorly. 



Carapace very thick, smooth, very finely punctate; sides 

 converging posteriorly, regions well marked. Front deflexed, 

 in a dorsal view seeming faintly bilobed. Lateral margin 



