TRANSACTIONS OF WAGNER 

 1448 



TERTIARY FAUNA OF FLORIDA 



Genus CORBICTJLA Megerle. 



Cyclas (sp.) Lamarck, Syst. des An. s. Vert., p. 123, 1801, C. euphratica Lam.; Bosc, 

 Hist. Nat. des Coq., iii., p. 35, 1802. 



Corbicula Megerle von Miihlfeld, Entw. ein. Neues Syst., p. 56, 1811, Tellina fluminalis 

 Miiller; Rafinesque, Ann. Gen. des Sci. Phys., Bruxelles, 1820, p. 319, C. fluviatilis 

 Miiller, C. fluminalis var. ; Blainville, Diet. Sci. Nat, xxxii., p. 336, 1824 ; Man. 

 Mai., i., p. 552, 1825; Gray, Ann. Mag. N. Hist, 2d Sen, xi., p. 38, 1853; Philippi, 

 Handb. d. Conchyl., p. 314, 1853 ; Deshayes, Cat. Conch. Brit. Mus., ii., p. 219, 1854 ; 

 Woodward, Man. Rec. Fos. Shells, p. 297, 1854; Meek, Inv. Fos. Upper Missouri, 

 p. 160, 1876. 



Cyanocyclas (sp.) Ferussac, Diet. Sci. Nat., xii., p. 280, 1818. 



Cyclas (Cyrena) sp., Schweigger, Handb. d. Naturg., p. 707, 1820, C. fuscata, = Venus 

 fluviatilis Miiller. 



Cyrena a, Bowdich, Elem. Conch., ii., p. 9, 1822. 



Cyclas B *, Blainville, Diet. Sci. Nat, xxxii., p. 33, 1824; Man. de Mai., i., p. 551, 

 1825. 



Cyrena , Anton, Verz. Conch., p. 13, 1839. 



Cyrene Schlueter, Verz. Conch., p. 34, 1838, C. " fulminea Lam.," ? = Cyrena (Corbicula) 

 fluminea Lamarck. 



Cyrena T. Brown, Zoologists' Textb., i., p. 451, 1833, C. fluminea Lam. ; Sowerby, 

 Conch. Man., ed. ii., p. 135, fig. 113, 1842. 



Corbulica Chenu, Man. de Conchyl., ii., p. 102, 1862; err. typ. pro Corbicula 



<^Neocorbicula Fischer, Man. de Conchyl., p. 1092, 1887, C. variegata Orbigny (= C. 

 limosa Maton). 



<Veloritina Meek, Prel. Rep. Geol. Surv. of Wyoming (Hayden), p. 294, 1872, Corbicula 

 Durkeei Meek, upper Cretaceous; Sixth Ann. Rep. U. S. Geol. Surv. Terr., p. 511, 

 1873; Inv. Fos. Upper Missouri, p. 161, 1876; U. S. Geol. Surv., 4Oth Par., Paleon- 

 tology, p. 167, 1876. 



<^Cyrenocyclas Agassiz, Nomencl. Zool., Index, p. 329, 1847 ; = Cyanocyclas corrig. 



This genus is closely related to Cyrena, and the hinge is based on the same 

 numerical elements, but the laterals are long and crenate or sharply cross- 

 striated, and in the typical forms the pallial line is devoid of a sinus. Unlike 

 Cyrena, all the Old-World species agree in having an entire pallial line. Most 

 species of Corbicula are more or less concentrically sculptured and covered with 

 a handsomely polished brown periostracum. 



The following groups may be recognized : 



Genus Corbicula Megerle. 

 Subgenus Corbicula. 



