Boone, Crustacea, Cruises of ''Eagle" and " Ara," 1921-28 159 



tooth scarcely longer than the seventh tooth. Propodus with four 

 prominent beaded carinae, the carina immediately below the upper 

 margin terminating in a subdistal spine; the upper margin is also 

 carinate with a large distal and a subdistal spine. 



Type: "From the coasts of Guadeloupe"; also a specimen taken 

 by the "Hassler" Expedition in Lat. S. 11° 27', in 17 fms. ; deposited 

 in the Paris Museum. 



Distribution : Pelagic from the coasts of Georgia, U. S. A., south- 

 ward throughout the "West Indies to Brazil. This crab is a very rapid 

 swimmer and is often found far out at sea. 



Material examined: One male with left cheliped in process of 

 regeneration, taken at electric light, Miami, Florida, by the "Ara," 

 William K. Vanderbilt, commanding. 



Color : Mr. Vanderbilt 's field-notes state that the legs of this crab 

 are margined with crimson. 



Technical description : Carapace oval, very convex from the cen- 

 ter down to the edges, a finely beaded, curved carina extending from 

 the gastro-cardiac region to the lateral spine ; a rather deep sulcus on 

 either side of the gastro-cardiac region ; a shorter, similar carina on the 

 metagastric region; dorsal surface of carapace finely pubescent. 

 Frontal teeth six, besides the preorbital, the submedian pair more 

 bluntly rounded than the adjacent triangulate pair and with the pro- 

 jection of the epistome visible between them; the sinus separating the 

 second and third, or outer, pairs of teeth is a wide, deep U-shape; 

 the third pair of teeth are more acuminate than the second pair. The 

 preorbital tooth is triangulate, with a median rib beaded, the tip 

 directed outward. The infraorbital angle is beaded, triangulate, vis- 

 ible dorsally ; there is also a tooth on the basal peduncular joint of the 

 antennae, which is visible dorsally. The superior orbital margin has 

 two nearly closed sinuses; the inferior margin has one V-like sinus, 

 with an acute tooth at its outer side, the remainder of the margin 

 crenulated. The postorbital tooth is large, acute, triangulate, and is 

 followed by a much smaller acuminate tooth; the third, fifth and 

 seventh teeth are large like the first tooth ; the fourth, sixth and eighth 

 teeth are small like the second tooth; the seventh or lateral tooth is 

 slightly larger than any of the others and is outward and forward 

 cui-ved. The postlateral margins are lightly carinated and the pos- 

 terior margin is rather heavily carinated. The male belt is triangular, 



