328 



BIBLIOGRAPHY OF 



Page. 





Page. 





425 



Odotropis Raf. 



425 



Toxotrema Raf. 



425 



Mesomphix Raf. 



425 



globularis Raf. 



425 



Triodopsis Raf. 



425 



complanata Raf. 



425 



Xolotrema Raf. 



425 



Stenotrema Raf. 



425 



lunula Raf. 



425 



convexa Raf. 



425 



triodopis Raf. 



425 



Aplodon Raf. 



425 



Chimotrema Raf. 



425 



nodosum Raf. 



425 



planiuscula Raf. 







[Descriptions of fossil univalves here follow. — W. G. B.] 





Subgenera of Unio — 





Subgenera of Unio — 



423 



Proptera Raf. 



426 



Obovaria Raf. 



426 



alata Raf. 



426 



obovalis Raf. 



42 3 



phaiedra Raf. 



426 



subrotunda Raf. 



423 



pallida Raf. 



427 



syntoxis Raf 



423 



Eurynea Raf. 



427 



retusa Raf. 



423 



latissima Raf. 



427 



crassa Raf. 



423 



dilatata Raf. 



427 



torsa Raf. 



423 



solenoides Raf. 



427 



Truncilla Raf. 



426 



Elliptio Raf. 



427 



triquetra Raf. 



423 



Plagiola Raf. 



427 



truncata Raf. 



426 



verrucosa Raf. 



427 



A.mblema Raf. 



423 



fasciolaris Raf. 



427 



ovalis Raf. 



426 



leptodon Raf. 



427 



Pleurorema Raf 



423 



depressa Raf. 



427 



mytiloides Raf. 



426 



flava Raf. 



427 



conica P^-af. 



426 



obliquata Raf. 







[Descriptions of fossil bivalves.— 



-W. G. B.] 



428 Noletrema patelloides Raf 

 [Other fossil shells.] 



Ohio. 



Girard. — Catalogue of Recent Shells and other Mollusca found 

 in the District of Columbia, prepared from specimens in the 

 Cabinet of Dr. E. Foreman: by Charles Girard. (Proceed- 

 ings of National Institute, Washington, vol. i, ]S"o. 2. March, 

 1856.) 

 [Bryozoa are omitted. — W. G. B.] 



Page. 



Page. 



79 Cyclas similis Say. 



79 Pisidium d-ubium Say 



79 rhomboidea Saij. 



79 variabile Prime. 



79 partumeia Say. 



79 Unio cariosus Say. 



79 solidula Prime. 



79 ochraceus Say. 



