Class V. ONISCUS. 37 



GENUS III. ONISCUS. 



Jaw truncated, denticulated. 



Lip bifid. 



Feelers unequal, hinder the longest. 



Antennje setaceous. 



Body oval. 



Feet fourteen. 



Gm. Lin. 3010. Idotea Psora. Bosc. Hist, des 1. Psora. 



Crust, ii. 80. Scurfy. 



[O. WITH the abdomen smooth underneath ; 

 tail semi-oval, sharp pointed. Tab. xix.Jig. 1. 



Gm. Lin. 3011. ? Pallas spic. Zool. ix. 68. t. 4. 2. Linearis.. 



n ,L i « j* Dentate- 



J- l 7-* X <- tailed. 



[O. with a sub-semicylindrical body ; head slen- 

 derer ; exterior antenna less than the length 

 of half the body, the intermediate very small ; 

 color brownish, with a paler stripe down the 

 back. Tab. xix. Jig. 2. 



