— 388 — 



IMcranobrancltia Gray 1821. Lond. Medic. Repos. * 

 teste Desh. 

 Etym. dig, bis; xQavog, vertex; ^Qccyxta, branchiae. 

 Sextus ordo Cryptobranchiorum. Genera : Fissurella, 



Scutus, Diodora, Emarginula. 

 Synon. Calyptracea (pars) l^amck. 

 Branchifera Blainv* 

 Patelloidea Rang. Menke. 

 Rimularia Desh. 

 Rimulacea Anton. 

 Fissurellidae D'Orbigny. 

 ? Fissuracea Reeve. 

 Fissurelladae Flemjng. 

 Uictyetliis Kafin. 1814. Precis de dec. som. * t. Agass. 

 Nom. 

 Eiym. Slxtvov , rete; fJw, soleo. 

 Genus Cephalopodum (Cryptodibranchiorum Agass.). 

 llitlacna Eichwald 1838. Faun. Casp. mar. prim. in BuUet. 

 d. nat. d, Mosc. 1838. II. * > Leonh. et Bronn 

 Jahrb. 1838. p. 622. et p. 734. et in Wiegm. Arch. 

 1839. II. p. 240. 

 Etym. dig, bis; daxvco , mordeo. 

 Novum genus Bivalvium Cardio inserendum. Conf. 

 Adacna. 

 Didonta ScHUMAcnER 1817. Ess. p. 125. 



E/y/m. dig, bis; odovg, dens. Rectius Diodonta. 

 = I!'*otella Daudin. ") 

 Uiltora Cr.AY * teste Leonh. et Br. Jahrb. f. Min. 1842. p. 

 496. Conf. Ginorga. 

 Etym. ? 

 = Thalassides Berger. 

 Diloma Philippi 1845. Abbild. u. Beschreib. Bd. L Heft 8. 

 p. 188. 

 Etym. dig, bis; Xaifia, margo. 

 Subgenus Trochi. Typus : Trochus nigerrimus Gmel. 



92) Errore Nyst 1846 Foss, Belg, p. 43 in synon. Solenis. 



