94 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 39. 



COXOPODIAS TRISTANI, new species. 



Body ovate, very convex, capable of being rolled up into a ball. 

 Color reddish brown, with a lateral band of light wavy lines on either 

 side of the body; surface smooth. 



Head wider than long, with the eyes small, round, composite, 

 situated close to the lateral margin; anterior margin straight, 

 <:::5K^ the antero-lateral angles acute; front not 



^ j^^^^ margined. 



First antennae rudimentary and inconspicu- 

 ous; second antennae with the first article 

 short, the second twice as long as the first, the 

 third about equal in length to the second, the 

 fourth a little longer than 

 the third, the fifth a little 

 longer than the fourth; fia- 

 gellum composed of two arti- 

 cles, the first of which is 

 about half as long as the 

 second. 



First segment of the tho- 

 rax the longest, about twice 

 as long as the head. The 

 epimeron or coxopodite ex- 



FIG. l.-COXOPODIAS TRISTANI. ^^^^^ ^|^g ^^^^^^ \^^g\Xx of thC 



lateral margin, separated from the segment by a 



longitudinal furrow; it is cleft posteriorly. There 



is also a slight furrow on the dorsal side of the segment, 

 close to the lateral margin. The second and third seg- 

 ments of the thorax are also fur- 

 nished, on the underside, with 

 small but conspicuous coxopodites 

 in the form of tooth-like processes. 

 First five segments of the ab- 

 domen short and subequal (the 

 first slightly shorter than the 

 others); lateral parts of the first 

 TANi. First ^^^ covered by the seventh tho- 



THREE SEG* 



MENTs OF racic segment. The abdominal 



Fig. 2.— Coxopodias 

 TRISTANI. Second 



ANTENNA. 





Fig. 3.— Coxo 

 podias tris 



THORAX (UN- segments complete the oval out- 



DERSIDE). ^ ^ o- 1 



line of the body. Sixth or ter- 

 minal segment triangular with the apex pro- 

 duced in an acute process. Basal article of the 

 uropoda obhquely quadrangular, occupying 

 all the space between the sixth abdominal 

 segment and the lateral parts of the fifth seg- 

 ment ; the inner posterior angle extends a little beyond the apical 

 process of the terminal abdominal segment. Inner branch of the 



Fig. 4.— Coxopodias trist ani. 

 First maxilla, a, Inner 

 lobe; 6, outer lobe. 



