117 



the antero-lateral lobes are moderately developed, and project 

 obliquely. The face (epistome or clypeus) is convex. The eyes 

 are small, of about 7 or 8 ocelli. The segments of the thorax 

 have their epimera laterally expanded and distinctly marked ; 

 the first segment has its antero-lateral angles reaching to the 

 lateral lobes of the head, the posterior angles of the following 

 segments project behind in increasing degree backwards. The 

 abdomen is short, with the lateral parts of segments 3, 4, and 5 

 projecting much behind, those of the 5th reaching nearly to 

 the level of the end of the 6th segment, this is very acute, a 

 good deal broader than long, triangulate, narrowing rather 

 abruptly, with sides incurved, reaching a little beyond the 

 peduncle of the uropods. The antennules are very small, 3- 

 jointed, the middle joint shortest, the distal one with a short 

 setum. The antennae are finely setose, the flagellum is rather 

 slender, composed of three joints, the middle one shorter than 

 the proximal, the distal being equal in length to the 1st and 

 2nd taken together, it ends in a setum ; the whole flagellum is 

 slightly longer than the 5th peduncular joint. The mandibles 

 are strong ; in the left one the incisory process is 4-toothed, 

 the secondary plate is bifid, and following it is a pad of setse 

 with a small penicil close to it and a longer one somewhat 

 further away in the proximal direction. The right mandible 

 also has a secondary plate, which is feebly chitinized. The 

 first pair of legs are partially prehensile, as the propodus is 

 slender and slightly curved ; the three preceding joints are 

 robust, and bear numerous stiff barbed setae. The remaining 

 legs have rather slender propodi and dactyli. In the female 

 only the exopod of the first pleopod is lobed, and that only 

 slightly ; the margins bear few small setae. The peduncles of 

 the uropods are short, and the inner rami are articulated quite 

 near the outer; the outer are stiliform, with slight grooves on 

 the outer sides, a little compressed in the dorso-ventral direc- 

 tion. The inner rami are slightly compressed, in the lateral 

 direction they reach to about half the length of the outer. 



The colour is pale-slate, with the usual lighter markings 

 on the dorsal surface. 



Family, ARMADILLIDID^. 



Genus, Cubaris, Brandt. 



CtiBARis coMMENSALis, n. sp. Plate iii. 



The body is strongly convex, with the pleural portions 

 of each segment of the thorax projecting downwards and a 

 little outwards at the extremities ; covered with laterally com- 

 pressed tubercles, which are mostly regular in longitudinal and 

 transverse series, thus each thoracic segment except the first 



