ISOPODS OF NORTH AMKRKW. 



427 



S(»i»-monts of the thorax with the lateral niarghis of tho first seoiueiit 

 slightly ('inaroiMatc aiitoriorly, the ciiiaro-inatioii hciiio- filled by the 



Fig. 4si>. — Asicu.rs ATTKNi-ATrs. 



epimeron: second, third, and fourth segments with the margins entire, 

 the epinn>ra (>vident at the extreme anterior aiigl(\s; the fiftli segment 

 with the posterior two-thirds emarginate, the epi- 

 meron conspicuous in the 

 emargination; th«' sixth and 

 seventh segments posteri- 

 orly emarginate. with prom- 

 inent epimera. 



Terminal segment of the 

 t»ody about as broad as 

 long, with a small rounded 

 loI)e in the middh^ of the posterior luargin. The uropoda an^ some- 

 what longer than the terminal segment, extremely slencUn- and cylin- 

 drical in shape, with ])oth branches nearly e(|ual in length, and longer 

 than the peduncle. The first pleopoda in th(> female are attached close 

 toy-ether. 



Fig. 483.— Asellus 

 attenu.4tus. leg 

 ok the fikst paik 

 ok kemai.k. 



Hi. 484. — ASELI.rS ATTEXUATl'S. 



a, Maxili.iped. h. Mandible. 



