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FIG.
Fam. Peristomata.
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.)
Pleurotomaria reticulata.
341.
Fam. Plicacea.
342.
Pyramidella terebellum.
343.
Tornatella solidula. Acteon, Montf.
344.
Monoptygma elegans. (from Lea.)
Fam. Scalariana.
345.
Vermetus lumbricalis.
346.
Rissoa reticulata.
347.
Eulima labiosa.
348.
—— marmorata. Bonellia, Desh.
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{{Information |Description = {{en|Plate, Fig. 318 to 348. Names (see below) are as used in the 1842 text. }} |Source = {{gutenberg|name=''A Conchological Manual''|no=43417}} |Date = 1842 |Author =[[w:George Brettingham Sowerby II|Georg...