Order, GASTEROPODA. Fam. Phyllidiana.
227. Chiton spinosus.
228. Chitonellus striatus. (from Sow. Gen.)
229. Patella oculus; a. anterior.
230. Patella pellucida. Helcion, Montf. Ansates, Klein.
231. Patelloida Antillarum. Lottia, Gray.
231*. Siphonaria Sipho.
Fam. Semiphyllidiana.
232. Pleurobranchus membranaceus.
233. Umbrella indica. Gastroplax, Bl.
Fam. Calyptracea.
234. Calyptræe Equestris.
235. ---- extinctorium.
236. ---- auriculata.
237. ---- Pileus. Infundibulum, Montf.
238. Side view of the same.
239. Crepidula Porcellana.
240. Capulus ungaricus, two views. Pileopsis, Lam.
241. Emarginula fissura.
242. Parmophorus elongatus. Scutus, Montf.
243. Rimula Blainvillii.
244. Cemoria Flemingii.
245. Fissurella oriens.
246. Ancylus fluviatilis.
Fam. Bullæana.
247. Bulla fragilis. Akera, Nonnul.
248. ---- aperta. Bullæa, Lam.
249. ---- aplustre. Aplustre, Schum.
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