176 iS. J. Smith on Ainerican Crustacea. 



Plate IV. 

 All the figures are natural size, and all from photographs, except 2'^, 6^, 7a, Sa, and 9 



Figure 1. — Gelasimus minax. 1, inner surface of the hand of tlie larger cheliped of a 

 male, from Bluffton, S. C. 1^ , anterior surface of the raerus of the same cheliped. 

 l'^ , outer surface of the hand of the larger cheliped of a male, from New Haven, 

 (from the same specimen as figure 4 on plate II). 



Figure 2. — G. pugnax. 2, inner surface of the hand of the larger cheliped of a male. 

 2* and 2l>, outer surface of the hand of the larger cheliped in two males. 2*= , ante- 

 rior surface of the merus of the larger cheliped of a male. 2^^ , abdomen of a male. 

 All the specimens from New Haven. 



Figure 3. — G. rapax. Inner surface of the hand of the larger cheliped of the male. 



Figure 4. — G. mordax. 4, inner surface of the hand of the larger cheliped of a male. 

 4a , outer surface of the hand of the larger cheliped of a young male. Both speci- 

 mens from Para. 



Figure 5. — G. Pana/mensis. 5, inner surface of the hand of the larger cheliped of a 

 male, from Panama. 5^ , anterior surface of the merus of the same specimen. 



Figure 6. — G. subcylindricus. 6, outer surface of the hand of the larger cheliped of a 

 male, from Matamoras. 6* , inner surface of the basal portion of the same hand. 

 e** , abdomen of the same specimen. 



Figure 7. — G. pugilator. 7, outer surface of the hand of the larger cheliped of a male. 

 7*, abdomen of a male. Both specimens from New Haven. 



Figure 8. — G. gibhosus. 8, outer surface of the hand of the larger cheliped of the male 

 from the Gulf of Fonseca. 8* , abdomen of the same specimen. 



Figure 9. — G. princeps. Abdomen of a male from Corinto. 



Plate V. 



All the figures are natural size. Figures 1, !''■, 2, and 2* are copied from photographs, 

 all the others from drawings. 

 Figure 1. — Opisthocera Gilmanii. 1, dorsal view of the whole animal. 1*, facial 



region, l^" , abdomen. I*', one of the first pair of abdominal appendages. \^ , 



one of the second pair of abdominal appendages. All the figures from the male 



collected at the Isle of Pines. 

 Figure 2. — Epilobocera armata. 2, facial region of one of the female specimens in the 



collection of the Boston Society of Natural History. 2* , outline of the antero-late- 



ral margin of the carapax of the same specimen. 2^ , external maxilliped. 

 Figure 3. — Cardiosoma guanhumi. 3, one of the appendages of the first segment of 



the abdomen of a male, from the Florida Keys. 3* , side view of the same. 

 Figure 4. — Cardiosoma quadratum. 4, one of the appendages of the first segment of 



the abdomen of a male, from Pemambuco, Brazil. 4* , side view of the same. 

 Figure 5. — Cardiosoma crassum. 5, one of the appendages of the first segment of 



tlie abdomen of a male, from the Gulf of Fonseca. 5* , side view of the same. 



