92 CRUSTACEA FROM THE BAHAMAS 



base, outer margin produced into a strong spine which is longer than 

 the inner, lamellar, portion ; distal end of terminal segment of peduncle 

 reaches to tip of scaphocerite. Third pair of maxillipedes reach about 

 to the end of shorter flagellum of inner antennae ; strongly tufted with 

 hair. 



First pair of pereiopods : larger hand much inflated, a slight but 

 distinct constriction on the upper margin near the articulation of the 

 dactylus, and a deep constriction on the lower margin. Thumb con- 

 torted ; a groove on the outer margin, the inner surface thickly covered 

 with hairs and punctate. Dactylus contorted ; extends slightly beyond 

 thumb ; inner surface with tufts of hair. Small hand (which on the one 

 specimen is left, the other right) has a longer and more slender dactylus 

 and thumb. Length of large hand i6 mm., breadth 6,5 mm. Length 

 of small hand 9 mm., breadth 4 mm. 



Second pair of pereiopods : carpus five-jointed, proximal segment 

 the longest, slightly longer than the second and third together; second 

 and fifth segments each a little longer than one-half the length of first ; 

 third and fourth the shortest, subequal. Posterior pereiopods: 

 meros without spines. Telson broadly triangular ; extremity truncate ; 

 two small spines on either side of median line of dorsal surface; the 

 outer ramus of uropod bears on its external distal angle a large, very 

 black spine, which is distinguished from the similar black spine of A. 

 Websteri Kingsley (I.e., p. 416, 1879) by its much larger size and con- 

 sequently more prominent appearance. Length of specimens 25 mm. 

 and 22 mm. respectively. 



60. Alpheus minor Say 



Say, Jour. Acad. Nat. Sci. Phil., I, p. 245, 1818. 



Kingsley, Bull. U. S. Geol. Survey, IV, p. 190, 1878. 



Bate, Challenger, Macrura, p. 558, PL C, 1888. 



(a) numerous specimens, from brown sponges. 



(^) I 5, with ova. Along shore near Nassau, N.P., Feb. 20, 1890. 



(c) 10 specimens, from brown sponges. 



Range: From Cape Hatteras (U.S.F.C. 1885) to St. Paul's 

 Rock (Bate, Challenger). Both shores of Central America. 

 Collected at Jamaica, New Providence. 



Lot (c) may possibly be a variety, as the thumb is shorter than the 

 typical minor, but otherwise there seems no difference. 



