FKOSSTE 
(TERTIARY.) 
America. 
43. CYRENA CALIFORNICA, Gutch. 
Ryker's Pass, lat. 38. California. Pleiocene. (Ex auctore.) 
Europe. 
(BASIN OF PARIS.) 
ør" Cyrehna proper: 
44. CYRENA CHARPENTIERII, Deshayes. 
Potiez et Michaud, Gallerie de Douai. 
a. Epernay. (Ex auctore.) 
b. Ermenonville. (Ex auctore.) 
45... CYRENA COMPRESSA, Deshayes. 
Lamarck, An. VI. 
Mouy. (Ex auctore.) 
