302 EXPLANATION OF PL/VTES. 



FIG. 



257. Parmacella Olivieri. (from De Ferussae.) 



258. palliolum. (from De Ferussae.) 



259- Limax antiquorum. 



260. Plectophorus corninus, (from De Ferussae.) 



261. Testacella Haliotoidea. 



262. Helixarion, Cuv. 7-rr-., • r» n t, • tt i 



> Vitrma, Drap. Cobresia, Haubner. 



263. Helicolimax pellucida. > 



Order, Trachelipoda. 

 Fam. Colimacea. 



Sub -genera of De Fer. 



264. Helix brevipes, Drap Helicophanta. 



265. Succinea amphibia. 2 



266. patula. Amphibulima, Lam. S oc o y 



267. Helix liEemastoma. Acarus, -. 



Montf. / 



268. Pomatia, V Helicogena. 



269. Streptaxis contusa, Gray. % 



270. Another view of the same. J 



271. Anastoma depressum. 



272. Another view of the same. 



273. Helix nux-denticulata. 



274. Proserpina nitida. 



275. Polygyra septemvolva,. 



276. Another view of the same. 



277. CarocollaLamarekii. i Helicigona. 



278. Helix pileus. Geotrochus, Sw. ) 



279. algira. Zonites, Montf. } TT ,. „ 



& __ . . > Hehcella. 



280. citrma. Nanima, Gray. 5 



281. epistilum Helicostyla. 



282. Bulinus rosaceus ; a. apex. 

 283. Guadaloupensis ; Bulinulus, 



Leach. V Cochlostyla. 



284. Lyonetianus. Gibbus, Montf. 



285. lubricus. Cionella, Jeffreys. 



