^^im'^'] PROCEEDINGS OF THE NATIONAL MUSEUM. 375 



granules extending across the carapace. On the gastric areolations 

 these granules are bunched. 



Front produced, faintly four-lobed and divided in the middle by a 

 deep, narrow notch, the outer angles of which are ordinarily rather 

 sharp. Median lobes curve backwards to the uiuch-tlattened and in- 

 conspicuous lateral lobes. On the margin of the front there is a single 

 row of granules which give it a denticulate appearance. These granules 

 extend around the autero-lateral margin, where they are less conspicu- 

 ous than on the front. 



Upper portion of the orbit with two sutures more or less open. Coal- 

 esced tooth divided part way to its base by a broad sinus, anterior 

 angle sharp, posterior rounded. Anterior edge of second normal tooth 

 straight, outer edge truncate, rounding gradually backward to the sinus. 

 Third normal tooth slightly hooked forward. A bunch of granules be- 

 gins on the point and widens out till it occupies the whole raised sur- 

 face of the tooth. Anterior and posterior margins of fourth tooth 

 very nearly alike, the anterior very slightly concave. The points of the 

 coalesced tooth and the point of the second tooth are in a straight line, 

 and nearly in line with the internal angle of the orbit, giving the cara- 

 l^ace a hexagonal appearance. The cuts between the teeth are rounded 

 at the base, and the whole anterior base of the third tooth is hollowed 

 out forming a pit which runs back under the ridge of the tooth. 



External hiatus of the orbit V-shaped. Subhepatic tooth very 

 slight. 



Outline of male abdomen concave. Second segment short, sides 

 straight, nearly- parallel. Seventh sternal segment showing broadly; 

 coxtp of fifth pair of feet altogether cut oft" from contact with third 

 abdominal segment. Penultimate segment broadest at its distal end, 

 sides straight. Terminal segment triangular, as long as broad. 



Meros of chelipeds longer than usual in the genus. Carpus and 

 upper portion of hand thickly covered with large granules. Carpus 

 rugose, carpal depression present. Upper margin of hand surmounted 

 by two ridges. Large hand deep and strong. Small hand with the 

 fingers much deflexed. Dactyl of large cheliped with a cylindrical 

 tooth, which is, however, occasionally wanting, and a tooth on the 

 manus at the base of the dactyl. Prehensile edge of the fingers den- 

 tate. Color of the fingers clear white, in the large hand extending 

 nearly to the gape of the claw. Ambulatory feet slender, dactyls hair3^ 



This species is very distinct from any others that we have examined, 

 and is easily distinguished by its denticulate front in connection with 

 the dentation of the antero lateral margin, and the white fingers with 

 cylindrical basal tooth. 



Length of carapace in large specimen, 6.5 millimetres ; width, 9.5 

 millimetres. 



KECORD OF SPECIMEXS EXAMINED. 



Florida: Key Largo (15G48); Indiau Key (15649); No Name Key (15650); Key 

 West Harbor (15651); Key West (15652); ? Dry Tortugas (15653). 



