5h^b, 



1 



Published at $10 per Annum— Payable in Advance. 

 Vol. 3. Part 4. 



AMERICAN 



COIsTCHOLOQ^Y 



1867. 



PUBLICATION COMMITTEE: 

 GEORGE W. TRYON, Jr., Editor, 

 ISAAC LEA, LL. D., 

 C. F. PARKER. 



Ah, 



PHILADELPHIA : 



Published by 



The CoNCHOLOGiCAL Skction of the Academy of Natural Sciences, 



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NEW YORK : BOSTON : 



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 Trub.\er & Co., No. (50 Paternoster Row. 



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BERLIN : 



ASHER & Co., No. 20 Unter d. Linden. 



i^ 



