— 599 — 



Trig;oiiiacea Broiin. cuntiii. 



Familia Dimyatiorum. Genera : Lyriodon, Myophoria. 

 Ham.ky 184(). llliistr. cat. II. j). 172. — tribus La- 



mellipedium. Geneia: Triii,onia, Castaiia. 

 Menke 1846 in Agass. Nom. zool. Moll. 

 = Trigonea Lamck. 



Trisoniadae Flem. 1828. Ilist. Br. An. p. .382. (Trii^oni- 



oi dae corr. Ag.) 

 P^amilia Asiphonidum dimyorum Genera: Trigonia, 



Castalia. 

 Gkay 1842. Syn. Br. Mus. p. 81.92. — fam. Gonio- 



podum. Genus : Trigonia. 



= T r i g o n e a Lamck. 



Trl^oaiiana (Lamck.) Leach 1823. Syn. Br. Mus. p. 59. 

 Jay 1836. Calal. e<l. 2a p. 18. P:d. 1839. p. 22. 

 Berge 1847. Conch. Buch p. 25- 

 = Trigonea Lamck. 



Trigonidae D'Orb. 1844. Pal. Iranr. T. cret. III. p. 128. 

 Familia Orthoconcharum iutegropalliatarum. Genus: 

 Trigonia. 



Pariter Geinitz 1846. Grundr. d. Verst. p. 440. 

 = Trigonea Lamck. 



Trii^oniea (Trigonieen) Bronn vid. Trigoniacea. 

 Trisonima Rafin. 1819. Journ. de phys. 88. p. 426. Cf. 

 Blainv. 1828. Dict. sc. nat. tom. 55. p. 300. 



Etym. ? 



Genus Polythalamorum non satis dilucidatum. 



Triffonina Raflx. 1831. Cont. Monogr. Biv. * > Fer. 1835. 

 Bull. zool. p. 23. 

 EUjm. tQlyojvos, triangulus. 

 Genus Macrilium. Cf. Trigorima. 

 Trigonloidae Agass. 1847. Nom. z. Ind. vid. Trigonia- 



dae et Trigonidae. 

 Tri^onoeaeiia Gray. Nyst. vid. Trigonocoel ia, 

 Trisonocella Sismonda vid. Trigonocoelia. . 



