— 225 — 



rhilostoma FiTziNfiER 1838. Syst. Ver/. p. 98. 

 Etym. itVkoii.1 Inbiiiin; 0T6(.t(x, a[)ei'tura. 

 Genus Helieoideormn. Typicae speeies: Helix cornea 

 Drap. et Helix pulchella Miill. 

 = Circinaria Beck et Cainpylaea Beck. 

 Cliilotrema LEAcn ined. (1820. Syn. Brit. Moll. p. 106. 

 teste Turton 1831. iMan. *) 

 Etym. yyilos, labiun»- i^i^^ia, foramen. 

 Ab Helicibus segregatuni genus. Typus: Helix la- 



picida Linn. 

 Beck 1837. Ind. p. 28. — subgenus Helicis e sec- 



tione reflexilabriuni. 

 Gray 1840 in Turton Man. ed. 2a p. 140. — sub- 



genus Helicis. 

 Synon. Carocolla (sp.) Lainck. 



Helicigona subdiv. Carocollae (spec.) Feruss. 

 Latoinus Fitzinger. 

 Clftimaera et 



Cltimaeroderma Poli 1792. Test. utr. Sic * teste Blainv. 

 Dict. sc. nat. toin. 8. p. 679. 

 Etym. xiji(aiQa, Chiinaera, noin. propr. myth.; dsQ/na^ 



testa. *^) 

 Genus tertiae familiae Molluscorum subsihentium, 

 = Pinna List. 

 Cltkmaeroilerma Bisso 1826. Hist. IV. p. 321. 

 Etym. praeced. 



Secundus ordo Lamellibranchiatoruin. 

 CItiB»ato|Bltora FiscH. de Waldh. 1817. Mein. nat. Mosc 

 II. * teste Agass. Noin. 

 Etym. xtlfia, hiems; cptQH), fero. 

 Sectio Branchioj)neustorum. 

 Chimotrema Haiix. 1819. Journ. de phys. tom. 88. p. 425. 

 Etym. V X£r/<a, hiems; iQrjia, loramen. An rectius 



Scliismotreina a oy^i^o), scindo'^ 

 Ab Helice segregatuni genus» 



48) Chimaera Liiiii. (reiiiis pisciiiiii. 



