268 PROCEEDINGS OF THE ACADEMY OF 



2. C. Africa n a, Adams. Ad. Rec. Gen. 2, 447. 1858. 



Cyrena Africana, Kr. Moll. S. Afr. 8, pi. i. f. 9. 1848. 

 C. Gauritziana, Kr. In litt. 1848. 

 Hab. Africa. 



3. C. Agrensis, Prime. 



Cyrena Agrensis, Kurr. in litt. 

 Hab. India. 



4. C. Alp in a, Prime. 



Cyrena Alpina, Bgt. Sph. fr. 49. 1854. 

 Cyclas Alpina, d'Orb. Prod. 2, 381. 1851. 

 Hab. France, (fossil) 



5. C. ambigua, Desh. Proc. Zool. xxii. 345. 1854. 

 Hab. Euphrates. 



i. C. amygdalina, Desh. 



Cyrena amygdalina, Desh. Inv. Par. 500, pi. 37, f. 22, 23. 1857. 

 Hab. France, (fossil.) 



7. C. angnsta, Desh. 



Cyrena angusta, Desh. Inv. Par. 508, pi. 37, f. 9-12. 1857. 

 Hab. France, (fossil.) 



8. C. antiqua, Prime. 



Cyrena antiqua, Fer. Moll. terr. et fluv. f. 5. 

 Cyclas antiqua, d'Orb. Prod. 2, 304. 1854. 

 Hab. France, (fossil.) 



9. C. Arnoudii, Prime. 



Cyrena Arnoudii, Pot et Mich. Gal. Moll. 2, 192, pi. 61, f. 15, 16. 1838-44. 

 Hab. France, (fossil.) 



10. C. Arveniensis, Desh. 



Cyrena Arveniensis, Desh. Trait. Elem. Conch. 2, 698. 1843-50. 

 C. pisum, Desh. Bouillet, Cat. 157. 1836. 

 Hab. France, (fossil.) 



11. C. Austral is, Desh. 



Cyclas Australis, Lam. Lam. v. 560. 1818. 

 Cyrena Australis, Desh. Encycl. Meth. 2, 50. 1830. 

 Hab. Asia. 



12. C. Bengalensis, Desh. Proc. Zool. xxii. 344. 1854. 

 Hab. Bengal. 



13. C. Bens on i, Desh. Proc. Zool. xxii. 345. 1854. 

 Hab. Bengal. 



14. C. Bouilletii, Desh. 



Cyrena Bouilletii, Desh. Trait. Elem. Conch. 2, 698. 1843-50. 

 C. depressa, Desh. Bouillet, Cat. 156. 1836. 

 Hab. France, (fossil.) 



15. C. Brasi liana, Adams. Ad.. Rec. Gen. 2, 447. 1858. 

 Hab. Brazil. 



16. C. breviuscula, Desh. 



Cyrena breviuscula, Desh. Inv. Par. 503, pi. 36, f. 9-11. 1857. 

 Hab. France, (fossil.) 



17. C. Br i tann ica, Desh. 



Cycles deperdita, Lam. Park. Org. Rem. 3, 189, pi. 13, f. 8. 1811. 

 Cyrena subdeperdita, Morris. Cat. Brit, fossils 86. 1843. 

 Cyclas subdeperdita, d'Orb. Prod. 2. 305. 1850. 



[June, 



