List of Shells Inhabiting the Vicinity of Albany 

 and Troy, N. Y. 



By WILLIAM B. MARSHALL, 

 Assistant Zoologist. 



In the Twenty-second Annual Keport on the State Cabinet of 

 Natural History, 1868, Appendix C, p. 17, Mr. Truman H. Al- 

 drich published " A Partial List of Shells found near Troy, N. Y." 

 The list was the result of collections made during the summers 

 of two years, I806 and 1867, and- confined to a radius of six miles 

 with Troy as the center. Mr. Aldrich remarks in a note at the 

 beginning of his list that it is by no means complete. 



In 1887, Mr. C. E. Beecher, then assistant in paleontology in 

 the Museum, presented a large collection of shells to the New 

 York State Museum. This collection, numbering perhaps 20,000 

 specimens and as many more which were called duplicates, is 

 composed almost entirely of United States land and fresh- water 

 shells. The specimens from several localities, particularly those 

 from the vicinity of Ann Arbor, Mich., Warren, Pa., and Albany, 

 N. Y., were collected by Mr. Beecher himself. The vicinity of 

 Albany and Troy was frequently and carefully searched and it is 

 reasonable to suppose that the collection contains specimens of 

 all or nearly all the species inhabiting this neighborhood. With 

 such fine material at hand I have undertaken to revise Mr. Al- 

 drich's list with a view to making it more complete, and for the 

 purpose of adding several notes to those already embodied in his 

 list. 



The list as revised is not restricted to the same area as Al. 

 drich's list, although the limits have been extended very little. 



