94 Bulletin, Vanderhilt Marine Museum, Vol. II 



the first is bifid; each of the others preceded by a short spine; the 

 fourth spine is longest and marks the angle formed by the antero- 

 and postlateral margins; one postlateral spine short, Superior orbi- 

 tal margin with two teeth between the pre- and postorbital angles. 

 Basal antennal segment with three spines ; one, small, at base of next 

 joint, a long, obliquely out-directed one at the external angle, and a 

 small one on the inferior orbital margin. 



Type: Prof. Stimpson's types were taken off the Quicksands, Flor- 

 ida, in 34 fms., and west of Tortugas, 37 and 42 fms., and deposited 

 in the U. S. National Museum, but they are no longer extant. 



Distribution : Inhabits the deeper waters, off-shore, known from 12 

 to 45 and more rarely to 163 fathoms. Florida from Miami south and 

 westward in the Keys; the Gulf of Mexico, Yucatan Channel; Porto 

 Rico; Montserrat and Grenadines. The '^Ara" specimen establishes 

 the first Cuban record for the species. 



Material examined : One male dredged in Cualo Reales Channel, 

 Cuba, February 18, 1923. 



Color : In life this spider crab imitates a sponge in coloration, its 

 body being vivid orange red, the fingers are purplish red, with nar- 

 row white bands across their bases, according to the field-notes of the 

 late John B. Henderson, 2nd. 



Technical description: So far as known, this is a small species, 

 seldom exceeding a quarter of a dollar in diameter. The carapace is 

 decidedly longer than broad, elongate pyriform, anterolateral mar- 

 gins long, diverging posteriorly, their union with the postlateral mar- 

 gins angulated; the postlateral margins rounded, converging. There 

 are four spines on the anterolateral margin, the first of which on the 

 hepatic region is double, having a lesser spine on the anterior side; 

 there is also a small spine in front of each of the other anterolateral 

 spines, of which the fourth is longest ; the postlateral spine is shorter 

 than the others. The upper surface of the carapace is deeply cleft by 

 the cervical and cardiac grooves and covered with numerous sharp 

 spines, which are slightly less acuminate and less abundant on the gas- 

 tric region than elsewhere; each spine is tipped with a cluster of 

 upstanding setae. The rostral horns are slender, three-fourths as long 

 as the interorbital width, directed almost straight forward, the tips 

 slightly incurved, acuminate, the horn separated from each other 

 by a V-shaped space, approximately equal to either horn. The basal 

 antennal article has three spines, a small one at the base of the first 



