THE GRAPSOID CKABS OF AMERICA. 



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edge slightly marginate outside, tip slender, 

 upturned. Dactylus long and slender, upper 

 edge slightly crested, tip hooked by the tip of 

 the propodus. Prehensile edges sharp, slightly 

 dentate, not gaping, or very slightly so. Fin- 

 gers black. 



Legs slender, minutely granulous. Dactyli 

 clothed with very short hair, posterior pair 

 considerably shorter than the others, propodi 

 slightly hairy behind. 



Sexual variation. — The females are more 

 convex than the males and the front is less 

 prominent and slightly deflexed. 



Measurements. — Male, Panama, length of 

 carapace 8.6, width of same 12.1 mm. (After 

 Smith). 



Range. — Costa Rica; Panama (Smith). 



Material examined. — Punta Arenas, Costa 

 Rica ; specimens in Copenhagen Museum. 



GLYPTOPLAX SMITHII A. Milne Edwards. 



Plate 13, figs. 3 and 4 ; plate 158. figs. 7-l(». 



Glvvtoplax smithii A. Mu.nk Edwards, Crust. U6g. 

 Mex., 1880, p. 336, pi. 61, figs. 4-4(f (type- 

 locality, reefs west of Florida, 13 fathoms; 

 type in M.C.Z.). 

 Diagnosis.— Fonr side teeth, the last one 

 small. A lobe on upper edge of palm. 



Description.—Closely related to the preced- 

 ing. The carapace is slightly convex trans- 

 versely, the lateral teeth upturned. The lobes 

 of the front are truncated and slope a little 

 backward and outward, except at the promi- 

 nent and blunt outer angle. Lateral teeth four, 

 the normal second tooth of the antero-lateral 

 border being obsolete; the two teeth next the 

 orbital are large, the first the larger, the sec- 

 ond the most prominent; the last tooth is very 



small. 



The wrists are somewhat nodulous as well 

 as granulous. On the proximal half of the 

 upper surface of the palm there is a lobe pro- 

 jecting inward. The immovable finger of the 

 smaller propodus is slightly deflexed, but not 



