98 Bulletin, Vanderhilt Marine Museum, Vol. II 



Type : Prof. Stimpson 's type was taken at Tortugas ; it is no longer 

 extant. 



Distribution : Recorded from the Florida Keys, Cuba, Porto Rico, 

 Jamaica, St. John, V. I., St. Croix. 



Material examined: One large male dredged at Port Tanamo, 

 Cuba, in 2 fms., February 3, 1924. A smaller male dredged in three 

 fathoms, Turtle Harbor, Florida, Nov. 20, 1923. One specimen dredged 

 in 20 fms., south end of Sand Key Light, Key West, Florida, Janu- 

 ary 29, 1923. One specimen, Marquesas Keys, Fla., 22 fms. 



Color: Unknown. 



Technical description : Carapace pyriform, 38 mm. long, 35 mm. 

 wide, cervical and urogastric groove deep, dorsal surface not flat, but 

 not especially convex, broken by many small areolae and tubercles, 

 lateral walls also tuberculate, one sharp, forward curved spine on the 

 hepatic region; the postlateral spine is well developed, set far back. 

 The rostral horns are short, sharp, tips incurved, separated by a 

 V-shaped sinus equal to either horn. Superior orbital margin with 

 four teeth, including the long preorbital and postorbital, also two 

 small teeth on the inferior margin. There are three spines on the 

 basal antennal article, a very long one at the anterolateral angle, 

 which reaches obliquely as far forward as the rostral horns ; a shorter 

 one on the inferior orbital margin, and a yet smaller one at the base 

 of the free segment ; this latter extends as far forward as the rostrum, 

 and supports a slender flagellum of twice its own length; the free 

 parts of the antennae are furnished with long hairs. The antennulae 

 fold obliquely within the fossett, beneath the rostral hood. The under 

 and side walls of the carapace are full of small, sharp tubercles. 



The male chelipeds are equal, massive; the merus is trigonal, 

 armed on the upper surface with a few spines, two or three on the 

 inner lateral margin and five or six on the outer lateral margin ; the 

 carpus is smooth, rounded, the propodus is two-thirds as long as the 

 greatest width of the carapace, with a node at the upper and lower 

 basal angles, as does also the merus ; the hand is laterally compressed 

 but moderately rounded, smooth ; the fingers have a decided gape ; the 

 upper one is armed with a single, large, sub-basal tooth ; the tips are 

 white, rounded, meeting closely. 



The ambulatories are stocky, compressed laterally, densely hirsute ; 

 the upper surface of the carpus and merus are spinose ; the dactyl is 

 strong, curved, very acuminate. 



