JULY, 1906. NOTES ON WISCONSIN MOLLUSCA. 75 
10. Strobilops affinis Pilsbry. 
Lake bluffs, south of Whitefish Bay ; Menomonee valley 
above Wells street viaduct ; Oak's farm, Cudahy ; Mishicot, 
Manitowoc Co., under conifers. 
Our original identification of the species as above is confirmed 
by Dr. Sterki. The specimens vary toward 8. virgo in exhibiting 
but six internal laminae, hence the reference to the latter species in 
the preliminary list published in the Nautilus. 
Strobilops labyrinthica Say. 
"Milwaukee, Wis., I. A. Lapham," Smith. Misc. Coll., VIII, 
85. As the species of this genus have been but recently discrim- 
inated, this may refer to the preceding. 
11. Pupoides marginatum Say. 
(syn. Leucocheila fallax, Say.) 
Kenosha, Mrs. E. C. Wiswall. "Milwaukee, Wis., I. A 
Lapham," Smith. Misc. Coll., VIII, 240. 
It is somewhat remarkable that this species should have eluded 
us at Milwaukee, where it will undoubtedly be found in the more 
open places, under stones. 
12. Bifidaria (Albinula) armifera Say. 
Whitefish Bay resort and bluffs to south ; Menomonee valley 
at Kraatz's brickyard and Castalia Park. 5787, Humboldt, Wis., 
W. M. Wheeler. Kenosha, Mrs, E. C. Wiswall's list. "Mil- 
waukee, Wis., I. A. Lapham," Smith. Misc. Coll., VIII, 242. 
13. Bifidaria (Albinula) contracta Say. 
Bluffs south of Whitefish Bay resort ; Menomonee valley at 
Castalia Park ; Johnson's woods ; Mitchell's woods at Layton 
Park. 
14. Bifidaria (Albinula) corticaria Say. 
Menomonee valley at Castalia Park, Wauwatosa. "Milwau- 
kee, Wis., I. A. Lapham," Smith. M. C, VIII, 246. 
15. Bifidaria (Vertigopsis) curvidens Gould. 
Johnson's woods, Wauwatosa, rare. 
