— 24 — 



IXIfistus Beck. contin. 



Subgenus Bulimi, e sectione tenuilabrium. Typus; 



Helix pupa Linn. 

 Synon. Ilelix (spec.) Linn. 

 Pupa (sp.) Drap. Lamck. 

 Cochlogena subdiv. Dontostomae sect. II. Fer. 

 Cochloslyla sect. Aplostomae (sp.) Fer. 

 Cylindrus Fitz. 

 Mater perlarum Klein 1753. Oslrac. p. 123. 

 Genus Ostreoruni. 

 = Melina Retz et Meleagrina Lamck. 

 maxillatae Fer. 1819. Prodr. p. 34. et Rang 1829. Man. 

 p. 162. 

 Etym. Maxilla. 

 Sectio Helicodontae. 

 = Polydontes Montf. 

 JHazza Klein 1753. Ostrac. p. 62. 



Etym. Vocab. barb. Ital. = clava argentea. 

 Genus Cochlidum rostratarum. 

 = Fusus sp.j Pyrula sp., Turbinella sp. 

 Medoria Leach teste Gray 1840. Syn. Brit. 3Ius. * 

 Eiym. ? 



Genus Trochoideorum. (Agass. Nom.) 

 llegadesma Bowdich teste G. B. Sow. 1823. Gen. Sh. 

 fasc. 16. * 

 Etym. f-dyag, magnus; dea/uog, vinculum. 

 Swains. 1840. Malac. p. 380. — genus Cyclinarum. 

 = Gaiatea Brug. 

 Hlegadomus Swains. 1840. Mal. p. 275. 378. Cf. Sow.jun. 

 Conch. Man. ed. 2a p. 186. 

 Etym. i.iiyctg , magnus; dofiog, domus. 

 Genus Unioninarum. Typus: Unio gigas Swains. 

 Hlegalodon J. Sow. 1827. Min, Conch. tab. 568. 

 Etym. (.dyag, magnusj odovg, dens. ') 



7) Megalodon Agass. oIim(1835.) genuspisciuin = Hypsodon Ag. 

 Megalodon Brullc (1835.) genus Orlhopteroruni. 



