642 RANKIN. 



scaphocerite slightly longer than peduncle, ends in a stout spine, 

 lamellar portion narrowed at base ; flagellum nearly twice the 

 length of the longer flagellum of inner antennae, about equal to 

 the body length. 



First pair of pereiopods : meros triangular in cross section, a 

 spine at the distal end of the inner lower margin ; carpus short ; 

 large hand much swollen, a deep narrow sulcus on upper mar- 

 gin, a depression on inner lateral surface running backwards and 

 downwards from this, a shallower depression on the outer sur- 

 face ; a sulcus on the lower margin constricts the palma sharply 

 from the thumb ; dactyl strongly arched, very little longer than 

 the thumb ; articulation vertical ; tip of dactyl and of thumb 

 calcareus ; scattered hairs on hand and dactyl ; the whole aspect 

 of the large hand, which appears to be always on the right side, 

 is very sim"ilar to that of A. cdzvardsii (cf pi. XVII, fig. 3) ; small 

 hand cylindrical, long and slender, fingers nearly straight, as long 

 as palma, slightly hairy. 



Second pair of pereiopods : carpus five-articulate ; first and 

 second joints subequal, third and fourth equal, together about 

 the length of fifth, which is shorter than the second ; hand, 

 slightly longer than fifth carpal joint. 



Third and fourth pairs of pereiopods similar, no meral spine. 

 Fifth pair of pereiopods more slender than fourth. Propodos of 

 third, fourth and fifth pairs fringed with small spines ; their 

 dactyls slender and sharp. 



Pleopods slender ; in the females loaded with well developed 

 ova. Telson rounded at distal extremity, lateral margins slightly 

 concave ; two small spines on each side of median line of dorsal 

 surface. Uropods rounded at distal end ; outer one with well- 

 marked diaeresis ; the outer angle of proximal portion is marked 

 by a minute spine and a longer articulated one is median to this. 



Color of fresh specimens : three broad, transverse bands of 

 brown on the carapace and one on each segment of the abdo- 

 men ; antenns and margins of the telson and uropods orange ; 

 pereiopods }'ellow ; large chela spotted with brown and with an 

 orancre area on the inner side ; ends of fino-ers white. In alco- 

 hoi the species is characterized by alternate bands of pink and 

 white, while the chelae are mottled with blue. 



