AMERICAN 



JOURNAL OF CONCHOLOGY, 



PUBLISHED BY THE 



Conchological Section of the Academy of Xatural Sciences, 



PUBLICATION COMMITTEE: 



GEO. W. TRYON, Jr., Editor. 

 S. R. ROBERTS. 

 EDW. J. NOLAN, M. D. 



PHILADELPHIA: 



Published hj 



The Conchological Section of the Academy of Natural Sciences, 



N. W. cor. of Broad and Sansom Streets. 



NEW YORK ! LONDON i 



B. Westerman & Co., Xo. 471 Broadway. Trubner & Co., No. CO Paternoster Row. 



BERLIN : 



^ AsHER & Co., No. 60 Unter d. Linden. 



1871. 



