THE GRAPSOID CEAJBS OF AMERICA. 289 



Upper margin of orbit directed outward and forward, outer angle 

 broad and obtuse, the margin between it and the lateral tooth con- 

 vex; this tooth is subrectangular with thickened tip. 



Chelipeds of female narrow. Outer surface of arm and wrist 

 crossed by short lines of granules, upper and outer margins rough 

 with short, oblique and parallel lines of granules, inner margin irreg- 

 ularly spinulous. Palms longer than wide, sparingly covered with 

 depressed granules, more numerous above and toward the carpus, 

 where they are arranged somewhat in rows. Fingers as long as the 

 middle length of the palm, prehensile edges irregularly toothed ex- 

 cept the distal third which has a straight, horny edge, tips curved 

 toward each other. 



Legs unusually long; the third leg is three and one-fifth times as 

 long as the carapace ; its merus is four times as long as wide. The 

 legs (as well as the carapace) are nearly naked, only the margins of 

 the last two joints (proximal end of the propodus excepted) bordered 

 with short hair with a few longer ones intermingled. The carpus 

 has two prominent lines of granules on the upper surface, the pos- 

 terior of which is continued somewhat obliquely on the next joint 

 near its margin. 



Measurements. — Female holotype, length of carapace 20, width of 

 same 22.8. fronto-orbital width 16.5, width of front 9.1 mm. 



Material exatniried. — Jamaica: Mulgrave (a small village in the 

 Cockpit Count}^ near Ipswich, St. Elizabeth) ; 1 female, holotype, 

 collected by Miss Verley, and received through Mr. P. W. Jarvis; 

 Cat. No. 21940, U.S.N.M. 



SESARMA (SESARMA) SULCATUM Smith. 



Plate 78, figs. 3 and 4. 



Sesarma sulcata Smith, Trans. Connecticut Acad. Arts and Sci., vol. 2, 

 1870, p. 156 (type-locality, Corinto, west coast of Nicaragua; type In 

 Mus. Comp. Zool.). 



Diagnosis. — Carapace large, deeply grooved and hairy. Front 

 wide. Side tooth acute. Eleven prominent blunt spinules on mov- 

 able finger. 



Description. — Carapace about four-fifths as long as wide, a little 

 narrowed at anterior angles; middle pair of post-frontal lobes wider 

 and more prominent than outer pair; regions well marked, surface 

 uneven, covered with small tufts of coarse black hair. Lateral tooth 

 strong, acute. 



Front steep, concave, its greatest height one-fifth of its width, 

 median sulcus very wide, lower edge very sinuous, with two strongly 

 projecting, thickened lobes, sides parallel with the lower angles 

 rounded and prominent. 



65863—17 19 



