131 



33. C. debilis, Deshayes. 



Cyrena debilis, Gould, Proc. Soc. N. H. Bost. iii, 293, 1850. 



U. S. Explor. Expedit. xii, 427, pi. xxxvi, f. 629, a. b. 



1852. 

 Corhicula debilis, Deshayes, Brit. Mus. Cat. Conchif. 234, 



1854. Hunter River, New Holland. 



34. C. Delessertiana, Prime, Ann. Lye. N. H. N. Y. ix, 



1869. Egypt and Smyrna. 



35. C. difficilis, Prime, Cat. Corb. 4, 1863. 



Ann. Lye. N. H. N. Y. 62, f. 7, 1864. North Africa f 



36. C. ducalis, Prime. 



Cyrena jiuminea, Mousson, Philippi, Abbild. Conch, ii, 76, 

 pi. 1, f. 3, 1847. Moll. Java, 87, pi. xx, f. 3, 1848. 



Corbicida ducalis, Prime, Proc. Soc. N. H. Bost. viii, 274, 

 1862. Prime, Cat. Corb. 4, 1863. Ann. Lye. N. H. 

 N. Y. viii, 225, f. 58, 1866. Java. 



37. C. episcopalis, Prime, Ann. Lye. N. H. N. Y. ix, 1869. 



Cambodia. 



38. C. erosa, Prime, Proc. Ac. N. S. Phila. 126, 1861. 

 Prime, Cat. Corb. 3, 1863. Ann. Lye. N. H. N. Y. viii, 



213, f. 40, 1866. Cambodia. 



39. C. fluminalis, Megerle. 



Tellina flwminalis, Mliller, Verm, ii, 205, 1774. 



Venus fluminalis, Chemnitz, Martini et Chemnitz, vi, 319, 



pi. XXX, f. 320, 1782. 

 Cyclas Bruguiere, Encycl. Meth. pi. 301, f. 2, 1792. 

 Gyclas Euphratica, Lamarck, An. Mus. Hist. Nat. vii, 420, 



1806. 

 Corbicula fluminalis, Megerle, Mag. Gesell. Naturf. Berlin, v, 



1811. 

 Cyrena fuscata, var. Lamarck, Lam. An. v, 552, 1818. 

 Cyrena fluminalis, Bourguignat, Cat. Saulcy. 79, 1852. 

 Corbicula fluminalis, Megerle, Brit. Mus. Cat. Conchif. 222. 



1854. River Euphrates. 



40. C. fluminea, Deshayes. 



Tellina fluminea, Mliller, Verm. ii. 206, 1774. 



Venus fluminea, Chemnitz, Martini et Chemnitz, vi, 321, pi. 



XXX, f. 322, 323, 1782. 

 Cyclas Chinensis, Lamarck, Ann. Mus. Hist. Nat. vii, 421, 



1806. 

 Corbicula fluminea, Deshayes, Brit. Mus. Cat Conchif. 226, 



1854. Ann. Lye. N. H. N. Y. viii, 60, f. 4, 1864. 



China. 



