272 



Hippdlyte rubra. 



pressed claws of the fourth and fifth pairs of legs), it differs 

 from the species I am acquainted with in the length of the 

 joints of the second pair of legs, in the claws of the legs 

 above mentioned not being compressed, and in the length of 

 their joints, and especially in the number and disposition of the 

 dorsal spines. 



[For a statement of the habitat, see at the close of the 

 notice of Hippolyte rubra.] 



Ord. Macro ura, Fam. Palaemdniokz?, Gen. PHippolyte, Sp. ? rubra West- 

 wood, {fig- 31.) 



Superior antennae with two setae, the upper ones fringed 

 with hairs and excavated below ; inferior antennae nearly the 

 length of the body. — Pedipalpes (d, under side ; e, upper side) 

 with three exserted joints, the last bluntly pointed, and twice 

 the length of the preceding one, with two rows of fasciculi of 

 hairs. — First pair of legs didactyle, very large, with the hands 

 (a b) very much compressed, unequal, the right (#, outward 

 aspect,) being the larger, bristly; b represents the left hand, 

 inward aspect : the thigh excavated beneath, and its inner 

 margin spinulose : second pair didactyle, very long, slender ; 

 wrists many-jointed : other legs terminated by a simple claw, 

 and spinulose within ; the last pair the most slender. — Tho- 

 rax with three short spines anteriorly. •— * Tail with five plates, 

 the middle one blunt at its apex, with four spines arranged in 

 two lines : c represents the middle and two side lamellae of 

 the tail. Colour deep scarlet, except above the eyes, which 

 are concealed under the shell, and above them it is trans- 

 parent and colourless: the tail is fringed with white hairs, 

 and the legs are mottled with yellow. 



This approaches nearer the genus Hippolyte than any 

 other, but differs very much from all the species figured in 



