JULY, 1906. 
NOTES ON WISCONSIN MOLLUSCA. 
71 
and "bivalves," the genus Carychium being included with the 
first named. In the order of arrangement, Pilsbry and Johnson's 
list has been followed for the land shells and Simpson's Synopsis 
for the Unionidae. The arrangement of the fresh water univalves 
is mainly that of Baker's Chicago Area Mollusca. 
Under each species there is given, first, the localities furnished 
by our own collecting, beginning with those in and about Mil- 
waukee, from the north around westward to the south, then the 
more remote accessions throughout the state, commencing with 
the southern and nearest; second, material previously in the 
museum ; third, records from lists submitted and accessions since 
reported to me; lastly, citations from the literature, notes and 
comments. The numbered species are those authenticated by 
our own collecting, as recently published in the Nautilus. 
For assistance in the identification of species the writer's 
thanks are gratefully tendered to Dr. Victor Sterki of New 
Philadelphia, Ohio, who has examined all the Sphaeriidse and 
Pisidiidae ; to Mr. Frank C. Baker of the Chicago Academy of 
Sciences, who made a rapid preliminary survey of the smaller 
fresh water forms; and to Messrs. Bryant Walker of Detroit, and 
Chas. T. Simpson of Washington, as acknowledged beyond. 
Further assistance has recently been rendered by Mr. Brues of 
the museum. 
It should be explained, finally, that the present paper is written 
from the standpoint of 1902, such later information being 
included only as came readily to hand. The extensive collections 
since made by the museum, and the more recent literature, will 
furnish the basis for a supplementary notice, which it is intended 
shall be prepared in the autumn. 
The material collected is all in the Public Museum of the City 
of Milwaukee. 
I. LAND SHELLS. 
1. Helicina occulta Say. 
Lake bluffs at and south of Whitefish Bay resort. "Sheboygan, 
Wis. (fossil), I. A. Lapham," Smith Misc. Coll., VII, 112 
"Brown Co., Wis," Nautilus, III, 113. "Sheboygan, Whitefish 
Bay, near Milwaukee, and near De Pere, W T is. * * Distribution 
markedly discontinuous and local," Pilsbry and Johnson, cata- 
logue, p. 2. See also Naut, III, 18, 20, for notes on distribution 
of this species. 
