17 



PALUDINA VIVIPARA, Lin. 



PLATE 6. 



P. testa ventricosa, subperforata, tenui, subdiaphana, 

 fusco-virente: anfractibus quinis, convexis: spira elongata, 

 apice obtuso: fasciis transversis fusco-rubris: sutura valde 

 impressa: apertura rotundata, intus transversim fasciata. 



SYNONYMS AND REFERENCES. 



LISTER, Conch., pi. cxxvi. fig. 26. 

 HELIX VIVIPARA, LINN.EUS, GMELIN, p. 3646, No. 105. 

 NERITA VIVIPARA, MULLER. Vermes, p. 182, No. 370. 

 CHEMNITZ, vol. ix., pi. cxxxii. fig. 1180, 1181. 

 PALUDINA VIVIPARA, LAMARCK. An. sans Vert., vol. viii. 



p. 511. 

 SAY, Nich. Encyc. (Amer. ed.) art. Conch., pi. ii. fig. 5. 



" American Conchology, pi. x. the two side figures. 

 P. LINEATA, VALENCIENNES. Rec. d'Obs. de Zool., etc., 



par Humboldt et Bonpland, vol. ii. p. 255. 



DESCRIPTION. 



SHELL subconic, ventricose, thin, and slightly 

 translucent; with five inflated volutions: there 

 are several reddish bands visible within and 



F3 



