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BIBLIOGRAPHY OF 



Page. 



42.') Odotropis Raf. 

 425 Mesomphix Raf. 

 425 Triodopsis Raf. 

 42" Xolotrema R"f. 

 425 lunula /•'«/". 



42.") triodopis Z?q/I 



42J Chimotrema 22a/. 

 42") planiuscula Raf. 



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



42.') Toxotrema R"f. 

 425 globularis Raf. 



425 complanata Raf. 



425 Stenotrema 22q/l 

 42.") convexa Raf. 



425 Aplodon Raf. 

 425 nodosum Zfa/. 



[Other fossil shells.] 



Girnrd. — 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, No. 2. March, 

 185G.) 



[Bryozoa are omitted. — W. ft. B.] 



Page. 



79 Cyclas similis Say. 

 79 rhomboidea Say, 



79 partumeia Say. 



79 solidula Pi-iim . 



Tage. 



7;' Pisidium dubium Say. 

 79 variabile Prime. 



7!) Unio cariosus Slay. 

 79 ochraceus s iy. 



