NOTES ON WISCONSIN MOLLUSCA. 
BY GEORGE H. CHADWICK. 
During the summer of 1902, the writer was engaged in 
rearranging the shell collections of the Milwaukee Public 
Museum. With the encouragement of the custodian (now the 
director) of the museum and the active assistance of the members 
of the Wisconsin Natural History Society, an effort was made to 
commence a collection of the shells of Wisconsin. The greater 
part of the local collecting was carried on outside of working 
hours, in company with Mr. Charles E. Brown of the museum 
staff, and numerous accessions were received from other members 
and friends who became interested in the work. Many of these 
voluntary contributors brought specimens from distant or out- 
of-the-way points reached on business or pleasure trips, thus 
materially extending our knowledge of the distribution of the 
species. These localities and contributors are specified beyond. 
The results of this ten weeks' occasional collecting, in a season 
not the most favorable for shell-hunting, are summarized in the 
present paper. It is hoped that they may be the beginning of a 
complete census of the Wisconsin mollusca. 
The names of those who added, often most generously and 
unremittingly, to the growth of this collection are these, the 
numeral following each indicating the total number of accessions 
by species credited to that name 
Charles E. Brown 306 . 
Ernest Bruncken 22 
William H. Ellsworth 9 
G. H. Chadwick 153 
William Finger 8 
Valentine Fernekes 31 
G. Friend 5 
Dr. S. Graenicher 23 
Henry P. Hamilton 8 
Simon Heller 2 
H. A. Kirchner 1 
Adolph F. Laue 4 
Hon. Publius V. Lawson. . 10 
Hugo Lutz 1 
The figures given in this list are open to some correction, 
especiallv since, when collectors collaborated, the full tally of 
67 
Benno Meyer 1 
Chas. E. Monroe 43 
Henrv Nesbitt 38 
William Orth 3 
H. Rossebo 5 
Mr. Selle 11 
E. E. Teller 6 
Miss Alice Ward 1 
Philip Wells 44 
Miss Olive C. Wheeler. . . 21 
Lee R. Whitney 6 
Mrs. E. C. Wiswall 
(exchange) 3 
