THE GRAPSOID CRABS OF AMERICA. 221 



CYMOPOLIA GRACILIPES A. Milne Edwards. 



Plate 52, figs. 3 and 4. 



CymopoJia gracilipcs A. MILNE EDWARDS, Bull. Mus. Comp. Zoul., vol. 8, 



1SSO, p. 29 (type-localities, hit. 23 13' N. ; long. S0 10' W., 84 fathoms; 



Montserrat, 298 fathoms; Grenade, 92 fathoms). 

 Palicus gracilii>es HATHBUN, Proc. Biol. Soc. Washington, vol. 11, 1S97, 



p. 94. A. MILNE EDWARDS and BOUVIER, Mem. Mus. Comp. Zoul., vol. 



27, 1902. p. 59, pi. 11, figs. 10-14 (type specified, female, lat. 23 13' N.; 



loug. 89 1C' W., 84 fathoms; Cat. No. 0497, M. C. Z.). 



Diagnosis. Lateral lobes of front not developed. One antero- 

 lateral tooth. Second leg between two and one-half and three times 

 width of carapace. Inner suborbital lobe prominent, bilobed. Two 

 triangular prominences on third segment and one on fourth segment 

 of male abdomen. 



Description. Carapace very wide behind, ornamented with few 

 but prominent tubercles; the most prominent are the two large car- 

 diac tubercles, side by side, separated by a deep furrow, and a cluster 

 of six or eight smaller tubercles on the posterior branchial area ; sur- 

 face minutely granulated. Fronto-orbital margin less prominent 

 and less deeply cut than in any other species; median sinus eqiii- 

 latcrally triangular, median teeth tubcrculiform, lateral lobes almost 

 obsolete. Preorbital lobe little developed, concealing but a small 

 part of e3 7 estalk. Supra-orbital lobes very shallow, rounded, inner 

 twice as wide as outer, inner and middle sinuses V-shaped, outer sinus 

 a shallow bay. Outer tooth of orbit very short, not reaching middle 

 of cornea. Only one antero-lateral tooth and that on the branchial 

 region just in front of widest part of carapace; tooth thick, obtuse, 

 prominent; behind it a groove runs parallel to postero-lnteral mar- 

 gin. Outer lobe of suborbital margin shallow, triangular, blunt, 

 separated from exorbital tooth by a broad, shallow sinus, and by a 

 deeper sinus from the long inner lobe, which has a sinuous outer 

 margin and at the extremity is divided into two subequal lobes, 

 visible from above, the inner lobe more advanced and on a higher 

 level. The rounded pterygostomian lobe does not conceal tho 

 extremity nor the outer portion of the inner orbital lobe. 



Chelipeds equal and slender in both sexes, nearly smooth; fingers 

 more filiform than usual, crossing far behind the tips; dactylus much 

 curved, exceeding the fixed finger, each armed distally on prehensile 

 edge with a few, small, distant teeth. 



The first leg reaches beyond carpus of second, the third beyond 

 propodus of second, the second is between two and one-half and 

 three times width of carapace; legs without protuberances, merus 

 joints strongly narrowed distally and moderately roughened, pro- 

 podal joints widening very slightly toward distal end, ductyli sinuous 

 on posterior margin. 



