52 BULLETIN 129, UNITED STATES NATIONAL MUSEUM 



antennal article largely visible from above, bearing a spine at anterior 

 angle; an oblong postorbital lamina and behind and below it a flat 

 triangular tooth; these two teeth correspond in position to the small 

 tubercles present in P. gracilipes and other species. Hepatic re- 

 gion much dilated laterally and ventrally, its spine narrow, flat- 

 tened, obtuse; a similar pterygostomian spine; buccal cavity con- 

 spicuously crested at anterior angle; basal antennal article with a 

 cristiform inner margin and an angular ridge on posterior half. 

 Sternal crests in male flat, tuberculate, separated by deep sulci; 

 crests on coxae of legs similar to those of P. lamelligera but less 

 prominent; anterior part of male sternum pubescent, two stout spines 

 in front of abdomen, projecting downward and forward; first segment 

 of abdomen bears a spiniform tubercle at distal end. 



Chelipeds in both sexes slender, hirsute, spinulif erous ; fingers in 

 contact. Legs very hairy except slender, yellow, horny tips of 

 dactyls; propodites slender, dactyls slightly curved. 



Measurements. — Male (9510), length of carapace 22, width 15 mm.; 

 female (6945), length 21, width 13.5 mm. Male (A. M. Edwards), 

 length 29, width 16 mm. 



Range. — Straits of Florida and Yucatan Channel to Barbados and 

 Carriacou. Depth, 73 to 201 fathoms. 



Material examined. — -See table, page 53. 



PODOCHELA LAMELLIGERA (Stimpson) 



Plate 20, figs. 1 and 2 



Podonema lamelligera Stimpson, Bull. Mas. Comp. Zool., vol. 2, 1871, p. 126 



(tj'pe-locality, off Tennessee Reef, 21 fathoms; type not extant). 

 Podochela lamelligera A. Milne Edwards, Crust. R6g. Mex., 1S79, p. 193. — 

 Rathbun, Proc. U. S. Nat. Mus., vol. 17, 1894, p. 49. 



Diagnosis. — Rostrum short, pointed. Postorbital tooth well 

 developed. Bases of legs ornamented with laminiform plates enclos- 

 ing cup-shaped cavities. Sternum of male formed by overlapping 

 plates. 



Description. — Cardiac region protuberant; gastric region with two 

 small pointed tubercles, the posterior the more elevated. Rostrum 

 triangular, rough above, tapering to a sharp point, hollow underneath. 

 Orbits with erect, spinuliferous margins. Postorbital tooth triangu- 

 lar, laminiform. Farther back and lower down, at either extremity 

 of epistome, there is a smaller tooth. Hepatic projection tipped 

 with a slender spine. Angle of buccal cavity cristate. A large 

 tooth in the middle of the pterygostomian crest. At the base of each 

 cheliped two thin plates project downward and inward, and there 

 are also two on the sternum at the extremity of the male abdomen. 

 Sternal plates broad, thin, spinulous, their posterior margins turned 

 downward and overlapping the next plate. Coxal segment of each 



