318. Ampullaria fasciata. Amphibola; a, aperture.
319. ---- Guinaica. Lanistes, Montf.
320. ---- Cornu-arietis. Ceradotes, Guild.
321. Paludina Bengalensis.
322. Valvata piscinalis.
Fam. Neritacea.
323. Navicella elliptica.
324. Neritina virginea. Theodoxus, Montf.
325. ---- spinosa. Clithon, Montf.
326. ---- perversa. Velates, Montf. (from Sow. Gen.)
327. Natica mamilla. Polinices, Montf.
328. ---- lineata.
330. Nerita peloronta. Peloronta, Oken.
331. Neritopsis granosa.
332. Pileolus plicatus.
333. Janthina fragilis.
Fam. Macrostomata.
334. Sigaretus concavus.
335. Stomatia Phymotis.
336. Stomatella imbricata.
337. Velutina lævigata. Galericulus, Nonnul.
338. Haliotis rubra, young.
339. ---- tricostalis, Lam. Padollus, Montf.
340. Scissurella elatior, magnified. } } (from Sow. Gen.) 341. Pleurotomaria reticulata. }
Fam. Plicacea.
342. Pyramidella terebellum.
343. Tornatella solidula. Acteon, Montf.
344. Monoptygma elegans. (from Lea.)
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