3. Marinus. Gm. Lin. 3011. 



Semicylin- q balthicus. Pallas spic. B. C. D 



dric. 



ONISCUS. Class V. 



Zool. ix. m. t. 4. /. 6. A. 



[O- with an hard subcylindrical body ; tail ovate- 

 oblong pointed ; length not exceeding an inch. 

 Tab. xix. Jig. 3. 



4. OcEANi- Gm. Li7i. 3012. Ligia oceanicus. Bosc. Hist, 



T../ff--f J des Crust, ii. IQO. 



Bijid-taued. 



[O. with a body of an oval form, tail bifid, each 

 division also bifid. Tab. xix. Jig. 4. 



5. Entomok. Gm. Lin. 3010. Pallas spic. Zool. ix. 64. t. 6. 



Feur-feelered. Asellus marinus, cornubiensis /. 1— 6. 



alius. Rati ins. 43. Idotea entomon. Bosc. ii. 178. 



[O. with an hard ovate body, growing slenderer 

 towards the tail ; tail oblong, of three hard im- 

 bricated pointed scales above, and one blunt 

 beneath; antenme four; color a dirty white, 

 inclining to cinereous on the back ; length more 

 than two inches. Tab. xix. Jig. 5. 



6. tEsTRUM. Gm. Lin. 3010. /. 13. 



' " " ' Pallas spic. Zoel. ix. 74. t. 4. Idotea oestrum. Bosc. ii. 179- 



[O. with a thick, oblong, softish body, becoming 

 broader towards the tail ; the abdomen covered 



