124 EXPLANATION OF PLATES. 
FIG. 
251 Bulla lignaria. Scaphander. 
252 Ampulla. 
253 Bullinula lineata? Beck. 
Fam.—Aplysiacea. 
254 Aplysia Petersoni. 
255 Dolabella Rumphii. 
Fam.—Limacinea. 
256 Cryptella, Webb. Parmacella calyculata, Sow. 
257 Parmacella Olivieri, (from De Ferussac.) 
258 —————-  palliolum, Do. 
259 Limax antiquorum. 
260 Plectrophorus corninus, (from De Ferrussac.) 
261 Testacellus haliotoideus. 
262 Helixarion, Cuv. Wi Aa Des 
263 Helicolimax pellucida awa P. 
Order.—TRACHELIPODA. 
Fam.—Colimacea. 
Sub-genera. De Fer. 
264 Helix brevipes. Drap.........---- Helicophanta. 
265 Succinea amphibia ; 
266 ————— patula, Amphibulina, Lam, }Cochlohydra. 
267 Helix hamastoma, Acavus, 
Montf. 
268 BOmatias i een) apenas = e.0 Helicogena. 
269 Streptaxis contusa, Gray, | 
270 Another view of the same, 
271 Anostoma depressum, 
272 Another view of the same, 
273 Helix nux-denticulata, 
ole Beamer aided |) eat - Helicodonta. 
275 Polygyra septemvolvus, 
276 Another view of the same, 
277 Carrocolla Lamarkii. he 
278 Helix pileus, Geotrochus, } Baik ebb Heheigoua- 
279 Helix algira. Zonites, Montf. : 
280 Helix citrina. Naninia, Geet ries oldelteelay 
281 Helix epistylium.............---- Helicostyla 
282 Bulinus rosaceus, mark apex, a. 
283 guadaloupensis; Bulimulus, 
Leach. +Cochlostyla. 
984 ———- Lyonetianus; Gibbus, Montf. 
285 —- lubricus; Cionella, Jeffreys, 
286 Achatina virginea. Liguus, a ; 
287 Achatinella, Swainson, ieee 
