CUM ACE A. 173 



species the name of Mr. James Hornell, to whom, I am told, no small share of 

 credit is due for getting together this interesting series of a group of animals 

 neglected by most collectors. 



Iphinoe niacrobrachiuni, n. sp. -Plate IV., figs. 72 to 75. 



Description of immature Female. Total length, 1 millim. : 



( larapace about one-fourth of the total length, its length in the middle line nearly 

 niic and a half times its height, moderately compressed, with a well marked dorsal 

 keel. Dorsal edge slightly arched. Pseudorostrum prominent, upturned, truncated, 

 the lateral plates meeting in front of the ocular lobe for a distance nearly equal to 

 the breadth of the latter. Antennal notch rather deep, angular, antennal tooth 

 acute. Ocular lobe transverse, its width more than twice its length. On the side 

 of the carapace are two very faintly marked longitudinal ridges. The upper is 

 continued backwards for a short distance from the pseudorostrum, the lower is just 

 above the lower margin of the carapace. The free thoracic somites are faintly 

 keeled dorsally. 



Antennules and third maxillipeds resembling those of Iphinoe crassipes, Hansen. 

 First legs (fig. 73) very long, basis less than half the length of the remaining 

 segments ; relative proportions of the latter as in /. crassipes, but the propodus 

 rather more slender. Second legs (fig. 74) resembling those of /. crassipes, the two 

 distal segments indistinctly separated. 



Uropods (fig. 75) with the peduncle stout and a little longer than the last somite, 

 with five or six strong spines on its inner edge. Rami unequal, the endopod a little 

 longer than the peduncle, its proximal segment with four or five spines on its inner 

 edge, and nearly half as long again as the distal segment, which has three terminal 

 spines and two or three on its inner edge. Exopod about two-thirds of the length of 

 the endopod, unarmed except for the terminal group of six or seven spines and 

 stout setse. 



Localities. Gulf of Manaar, Cheval Paar, 7 fathoms, 1 specimen, and Kondatchi 

 Paar, 4 to 5 fathoms, 1 specimen. 



This species jjresents a close resemblance to the Iphinoe crassipes of Hansen from 

 the Gulf of Guinea. Although Hansen's specimen, like those here described, was 

 immature, there appear to be sufficient grounds for regarding the species as distinct. 

 The outline of the carapace is somewhat different, the basal segment of the first legs 

 is much shorter, and the rami of the uropods are conspicuously unequal, while in 

 /. crassipes they are nearly of the same length. 



Family: DIASTYLIDtE. 

 Paradiastylis, n. gen. 

 Third maxillipeds without exopod. Third and fourth pairs of legs with no rudi- 



