— 323 — 



Polytlialamiiim Breyn 1732. Dissert. p. 7. 9. Cf. Schrot. 

 Lith. Lex. V. p. 212. 

 Unica classis Polythalamiorum. Genera: Nautilus, 

 Ammonia, Lituus, Orthoceras. 

 Polytropa SwAiNS. 1840. Mal. p. 80. 305. Cf. Sow. jun. 

 Conch. Man. ed. 2a p. 234. 

 Etym. nolvTQOTiog, versatus. 

 Genus Scolyminarum. Typus: Purpura lapillus L. 

 Pomacea Perry 1811. Conchol. * teste Feruss. 1820. Journ. 

 de phys. tom. 90. p. 285. 

 Etym. Nom. adject. 

 = Ampullaria Lamck. 

 Pomastoma (Pomastomes) Feruss. 1821. Tabl. syst. p. 

 XXXIV. 

 Etym. nwf.ia., operculum; aio^ia, os. 

 Primus subordo Pectinibranchiatorum. Familia : Tur- 



binea, Trochoidea. 

 Risso 1826. Hist. IV. p. 105. — prima legio Pecti- 

 nibranchiatorum. Familiae: Cricostoma, ElHpso- 

 stoma, Goniostoma, Hemicyclostoma , Oxystoma. 

 Pomastomae Menke olim 1828. Syn. p. 22. 



Primus subordo Pectinibranchiatorum. Familiae : 

 Turbineae, Trochoideae, Plicatae. 

 Pomatia Gesner 1558. De Aquat. p. 244. 255.* 



Etym. Ttajf-iaTiag, cochlea epiphragmate clausa. ^') 

 BoLTEN 1798. Mus. (ed. 2a 1819. p. 52.) 

 Beck 1837. Jnd. p. 43. — subgenus Helicis, e sec- 

 tione crassilabrium. 



Pariter Gray 1840 in Turt. Man. ed. 2a p. 135. 

 Synon. Helix (sp.) Linn. et Auctt. 

 Helix Montf. 

 Helix sect. a Schum. 

 Helicogena (sp.) Feruss. 

 Lucena Hartm. N. Alp. 



49) Pomatia Nees g^enus Laurinearum. 



