THE GEAPSOID CRABS OF AMERICA. 89* 



Deseinption of female. — Carapace thin, yielding; transversely 

 quadrilateral, with anterior margin arcuate and antero-lateral angles 

 rounded, postero-lateral corners truncated ; glabrous ; convex in both 

 directions, anteriorly so deflexed that orbits and front are invisible 

 m dorsal view. Orbits oval, larger than eyes. Extremity of front, 

 as well as under surface of carapace, margin of abdomen and margins 

 of legs except of dactyli, densely bearded; same bearding on upper 

 margin of arm, inner margin of wrist, and along middle of inner 

 surface of palm. 



First two articles of palp of outer maxilliped short and stout; 

 last article about twice as long as wide, attached at inner distal angle 

 of propodus. 



Chelipeds short, stout; propodus convex above, sinuous below; 

 fingers subconical, meeting when closed, a low tooth at middle of' 

 prehensile edge, tips hooked and crossing. 



Fig. 44. — Pinnotheres barbatds (23435). a, Endognath op outer maxilliped of 

 FEMALE, X 20 ; b, abdomen of male, X 7J. 



Legs similar, broad, compressed, dactyli falcate; first leg very 

 little shorter than second, third reaching to middle of propodus of 

 second, fourth to middle of propodus of third. 



Description of male. — Smaller and flatter than female and firmer 

 though not hard, suborbicular, broader anteriorly, a large pit either 

 side of middle, front convex and a little advanced as seen from 

 above, eyes filling orbits and visible dorsally. Pubescence as in 

 female, but covering chela also; propodus less sinuous below, thumb 

 shorter. Last leg relatively smaller than in female. Second seg- 

 ment of abdomen narrower than first and third ; sides of third con- 

 vex; from first to seventh regularly tapering; extremity rounded. 



Color. — Whitish or yellowish, spotted with black (Desbonne).. 



