NATURAL SCIENCES OF PHILADELPHIA. 97 



SHELLS OF HERKIMER AND ADJACENT COUNTIES IN THE STATE OF 



NEW YORK. 



BY JAMES LEWIS. 



At various times I have prepared catalogues and other papers 

 relating to the shells of this region. The latest catalogues of 

 shell-bearing mollusca of Herkimer and adjacent counties was 

 printed in the Proceedings of the Academy of Natural Sciences 

 in 1860. Since that date several species have been found which 

 previously had not been noticed. Corrections have also been 

 made of species wrongly named. 



A few rare land-shells have been detected in obscure retreats, 

 where the progress of civilization has not reached them. For con- 

 venience of reference I arrange the species alphabetically, without 

 following the most recent classification, my object being geogra- 

 phical distribution rather than classification. 



Amnicola Cincinnatiensis ? Anthony. 



Erie Canal and Mohawk River. In the rivers, this shell some- 

 times attains remarkable size. Specimens submitted to Mr. Tryon 

 were pronounced to be Cincinnatiensis or new. I do not feel dis- 

 posed to quote this as a new species on account of its size, for the 

 reason that other shells not recognized as new species sometimes 

 attain remarkable size in this region. 



A. lustrica, Say. 



Schuyler's Lake, Otsego County; Little Lakes, Herkimer 

 County ; Smith's Pond, Litchfield, Herkimer County ; Erie Canal. 



The shells found in Erie Canal are doubtlessly introduced. 

 Have been seen there only on one occasion (1869). 



A. pallida, Hald. 



Lakes, rivers, and canal. I can distinguish these shells from 

 those shells of Massachusetts called A. porata, Say, by Gould, 

 only by their color, due to locality. 



Ancylus fuscus, Adams. 



Schuyler's Lake and Little Lakes, New York. 



Ancylus parallelus, Hald. 



Schuyler's Lake and Little Lakes, New York. 

 1872.J 



