126 EXPLANATION OF PLATES. 
Fam. Neritacea. 
FIG, 
322 Valvata piscinalis. 
323 Navicella elliptica. 
324 Neritina virginea; Theodoxus, Montt. 
325 ————— spinosa; Clithon, Montf. 
326 ————— perversa; Velates, Montf. (from Sow. Gen.) 
327 Natica mamilla; Polinices, Montf. 
328 lineata. 
330 Nerita peloronta; Gen. Peloronta. 
331 Neritopsis granosa. 
332 Pileolus plicatus. 
333 Janthina fragilis. 
Fam. Macrostomata. 
334 Sigaretus concavus. 
339 Stomatia Phymotis. 
336 Stomatella imbricata. 
337 Velutina levigata; Galericula, nonnul. 
338 Haliotis rubra, young. 
339 tricostalis, Lam. Padollus. 
340 Scissurella elatior, magnified, £ Ss G 
341 Pleurotomaria reticulata, } (rom om en) 
Fam. Plicacea. 
342 Pyramideila Terebellum. 
343 Tornatella flammea. 
344 Monoptygma elegans, (from Lea.) 
Fam. Scalariana. 
345 Vermetus lumbricalis. 
346 Rissoa reticulata. 
347 Eulima labiosa. 
348 marmorata. 
349 Cirrus nodosus, Sow. 
350 Euomphalus pentangulus, (from Sow. Min. Con.) 
351 Scalaria Pallassii. 
352 Delphinula laciniata. 
Fam. Turbinacea. 
353 Solarium perspectivum. 
354 ————— bifrons, Gen. Bifrontia, Omalaxis, Deshayes. 
355 Orbis Rotella, (from Lea.) 
356 Another view of the same. 
357 Rotella vestiaria. 
358 Trochus stellaris, Lam. Calcar, Montf. Turbo, Sow. 
359 maculatus. Tectus, Montf. 
