264 NATURAL HISTORY BULLETIN. 



D. No subhepatic spine. spinosissimus Rathbun 



D'. A subhepatic spine. 



E. Superhepatic region unarmed. spinohirsutus Lockington 



E'. Superhepatic region armed with spines or spinules. 



F. Front and orbits with a few long spines. sayi Rathbun 



=aculeatus (Say) 

 F'. Front and orbits spinulous but without long spines. 



caribceus Desbonne & Schramm 

 C. Outer surface of larger hand all over spinulous. 



D. Carapace covered with long, fine, silky hair, diomedece Rathbun 

 D'. Carapace not covered with long, fine, silky hair. 



gracilipes A.Milne Edwards 

 B'. Superior orbital border either entire or armed with denticles or 

 spinules. 



C. Outer surface of larger hand entirely smooth and naked. 



andrezvsii Rathbun 

 C'. Outer surface of larger hand not entirely smooth and naked. 



D. Outer surface of larger hand only partially covered with tuber- 

 cles or spines. 



E. Outer surface of smaller hand only partially covered with 

 tubercles or spines. 



F. Carapace and chelipeds furnished with mushroom-like tuber- 

 cles, fragosus A. Milne Edwards 

 F'. Carapace and chelipeds not furnished with mushroom-like 

 tubercles. 

 G. Antero-lateral spines or teeth 5, including orbital. 



spinipes (A. Milne Edwards as Micropanope) 

 G'. Antero-lateral spines or teeth 4, including orbital. 



lacteus Stimpson 

 E.' Outer surface of smaller hand entirely covered with tubercles 

 or spines. 

 F. Carapace covered with hair. 



G. Frontal lobes separated from remainder of carapace by a 

 fringe of hair. floridanus Stimpson 



= lacteus A. Milne Edwards 

 G'. Frontal lobes not separated from remainder of carapace. 

 H. Carapace rough on the hepatic region. 



gonzalaisis Rathbun 

 H . Carapace smooth. 



J. Antero-lateral spines 4 including postorbital. 



quoyi Milne Edwards 

 J. Antero-lateral spines 5, including postorbital. 



miersii A. Milne Edwards 



