588 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxviii. 



Its posterior iiKuuiii is w cdue-sluqjed so that the small anal lainina' are 

 joined sul)laterally. 



Kach of these latter carries four plumose setfi? which are small and 

 short. No eo-o- strings present in this female. 



Of the ventral appendages the tirst antenna^ are elongate, with the 

 longer terminal joint very slender. IJoth 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. 



Pcsterior to the base of these antennae is a stout accessory spine 

 Avhich is relatively larger than in most species. 



The tirst maxilhe are small and almost straight, with the l)ase en- 

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

 at the ti}). Fnrca large, the base about the same length as the branches 

 and nearh' s(iuare. with a transverseh' semiliuiar 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. Thc^ accessor}' 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 sjiort spine on its posterior l)ordcr 

 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 nonserrate: 

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

 The bi-anches 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 nearl}' 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 leg's are w'ideh' separated, the exopod being 

 turned inward along the posterior border of the l)asal joint. 



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

 throughout, with straight sides. 



The fourth legs ar(^ long and stout, the l)asal joint nearly as long as 

 the tw^o terminal ones. There are H\e spines — a large one at the tip 

 of the second joint, a nuicli 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 

 wvo foliaccous projections fringed with long bail's at the bases of the 

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

 the terminal joint. These are almost exactly like those on C. rajxix^ 



