250 RANKIN. 



peduncle reaches to tip of scaphocerite. Third pair of maxilH- 

 pedes reach about to the end of shorter flagellum of inner an- 

 tennae ; 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 contorted ; a groove on the outer 

 margin, the inner surface thickly covered with hairs and punc- 

 tate. 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. Tel- 

 son 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. 

 ivebstcri Kingsley (1. c, p. 416, 1879) by its much larger size 

 and consequently 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, 18 18. 



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



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



{a) numerous specimens, from brown sponges. 



(li) I 9 with ova. Along shore near Nassau, N. P., Febr. 

 20, '90. 



(r) 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. 



