152 BULLETIN OF THE 



with a small spine at the inner angle; hand eonrpressed, smooth. Ambu- 

 latory feet pubescent, the dactyli in particular being covered with short 

 hairs on all sides. 



Dimensions of a male: Length of carapax, 0.28 ; greatest breadth, at 

 tips ut' the fourth antero-lateral teeth, 0. (3 inch ; proportion, 1 : 1,54 ; length 

 of ambulatory feel of the second pair, 0.60 inch. 



Dredged between East ami Middle Keys, Tortugas, in from 5 to 7 

 fathoms. 



LEUCOSOIDEA. 



Family CALAPPIDAE. 



Subfamily CALAPPINAE. 



Cyelois Balguerii Stm. 



Afursia Balguerii Desp,onxi: et Schramm, Crust, de la Guadeloupe, p. 52. pi. iv, 

 fig. -jo. 



The specimens agree in all respects with -the description and figure 

 quoted, except in the proportions of the carapax, which is narrower than in 

 the (juadaloupu specimens, being full} as long as broad. 



Key West, 2 to 5 fathoms. 



Between East and Middle Keys, Tortugas, 5 to 7 fathoms. 



Off Orange Key, Bahamas, April 1, 1869. Cast No. 2. 9 fathoms. 



Off die Tortugas, March 4, 1868. Cast No. - 13 



Off Pacific Reef, May 13, 1869. Cast No. 1. 30 



Off Carysfort Reef, March 21, 1869. Cast No. 8. .35 



Off Carysfort Reef, March 21, 1869. Cast X... 7. 40 



Off French Reef, March 21, 1869. Cast No. 2. 45 



Acantkocarpus uov. ecu. 

 Body regularly ovale, strongly convex in its antero-posterior dorsal out- 

 line. Carapax as broad as long, broadest in front. Antero-lateral con- 

 tinuous with the postero-lateral margin; the latter armed with a strong 

 tooth at about the middle. Pronto-orbital region very broad, occupying 

 more than half the width of the carapax. Eyes large. External maxilli- 

 peds not reaching to the anterior extremity of the buccal area; ischium 

 truncate in front, without projecting at the inner angle, which, like the 



outer one, is a right angle; meros shorter and br ler than the ischium, 



and narrowed in Iron!, with the palpus attached at the autero-interior 



: exognatlt reach in« to the tip of the meros. Chelipeds with a great 

 spine on the carpus placed in a horizontal plane and pointing outward in a 

 direction exactly transverse to the axis of the body. The ambulatory 



II I, . lender dad \ li, as in ( 'alapjm and Mursia. 



