THE GKAPSOID CRABS OF AMERICA. 8& 



Description 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 

 in 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, 



b 



FIG. 44. PINNOTHERES BARBATUS (23435). a, ENDOGNATH or OUTEE MAXILLIPED OF- 



FEMALE, X 20 J 6, 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). 



