588 PROCEEDINGS OF THE NATIONAL MUSEUM. vol xxviii. 



Its posterior margin is wedge-shaped so that the small anal lamina? are 

 joined sublaterally. 

 - Each of these latter carries four plumose seta? which are small and 

 short. No egg strings present in this female. 



Of the ventral appendages the first antenna? are elongate, with the 

 longer terminal joint very slender. Both joints are turned backward 

 and closely appressed to the anterior margin of the carapace. The 

 second antenna? have a long and slender terminal claw and a rather 

 small basal joint. 



Posterior to the base of these antenna? is a stout accessory spine 

 which is relatively larger'than in most species. 



The first maxilla? are small and almost straight, with the base en- 

 larged scarcely at all; the second maxilla? are elongate, stout and blunt 

 at the tip. Furca large, the base about the same length as the branches 

 and nearly square, with a transversely semilunar foramen . The branches 

 are slender, blunt, and curved in toward each other. Second maxillipeds 

 stout, the terminal claw about four-fifths as long as the basal joint, the 

 latter not swollen. The accessory spine on the terminal claw is short 

 and weak. First swimming legs stout, with a long plumose seta on 

 the distal end of the basal joint and a short spine on its posterior border 

 near the proximal end. 



On the terminal joint the three claws are about the same length and 

 not very strongly curved. The outer one is smooth and non-serrate; 

 each of the other two is branched at about its center on the inner side. 

 The branches are more slender than the tips of the claws and extend 

 some little distance beyond them. They are also perfectly transparent, 

 while the claw itself is more or less opaque. The plumose seta? on the" 

 posterior border of this joint and the seta at the inner distal corner 

 are like those in other species. 



The spines on the exopod joints of the second legs are long and 

 acuminate and are bent inward at nearly right angles to the outer 

 margin; the basal joint of these legs is strongly flattened and is rela- 

 tively wider than in most species. 



The rami of the third legs are widely separated, the exopod being 

 turned inward along the posterior border of the basal joint. 



The claw on this exopod is large and stout, about the same diameter 

 throughout, with straight sides. 



The fourth legs are long and stout, the basal joint nearly as long as 

 the two terminal ones. There are five spines — a large one at the tip 

 of the second joint, a much smaller one on the outer margin of the 

 terminal joint, and three at the tip — increasing in size from without 

 inward, the inner one more than twice the length of the outer. There 

 are foliaceous projections fringed with long hairs at the bases of the 

 first, second, third, and fifth spines and at the inner distal corner of 

 the terminal joint. These are almost exactly like those on C. rapaoc, 



