JULY, 1906. 
NOTES ON WISCONSIN MOLLUSCA. 
81 
43. Limnaea (Radix) columella Say. 
Mill pond near Nagawicka Lake, Delafield. "Milw." in 
pencil, Smith. Misc. Coll., VII, 32. 
44. Limnaea Bulimneai megasoma Say. 
Molas Creek, Manitowoc Co. 3248, Lake Koshkonong, 
Jefferson (?) Co. "Oconto, Wis., Geo. T. Marston," Naut., V, 81. 
45. Limnaea (Limnophysa) reflexa Say. 
Stream near electric light plant, Wauwatosa; pool in John- 
son's woods, abundant and variable ; Menomonee river dredg- 
ings ; Kinnickinnic river near Eleventh avenue ; pond in Cabeen's 
woods, old Chicago road ; Oak Creek, near South Milwaukee ; 
Sand Ridge Creek, southeast of Kenosha ; mill pond at Delafield, 
abundant. Kenosha, Mrs. Wiswall's list. "Milwaukee, Wis., 
I. A. Lapham ; Farwell's woods, Madison, Wis., Prof. S. F. 
Baird; Aztalan, Wis., Prof. Baird; Milwaukee, Lewis," Smith. 
Misc. Coll., VII, 41. 
Xo attempt has been made to discriminate the supposed 
varieties to which names have been applied. When it is difficult 
sometimes even to separate this species satisfactorily from the 
following, further niceties must be left to those who have abund- 
ant leisure. The large series from a single pond in Johnson' ; 
woods illustrates well the possibilities of variety-making afforded 
by this species. 
Specimens placed alive in an aquarium were cleaned out by 
dragon-fly larvae. 
46. Limnaea Limnophysa) palustris Miitler. 
(syn. Limnaea elodes Say.) 
Small pools near the Milwaukee river opposite the cement 
works ; Menomonee river dredgings ; pool in Johnson's woods, 
feeding on a carcase; hollow by roadside near Cabeen's woods, 
Chicago avenue ; north shore of Lake Winnebago, west of High 
Cliff. 12657, Johnson's woods, C. E. Brown. "Oshkosh, Lake 
Winnebago, Wis., A. C. Barry; Milwaukee, Wis., I. A. Lapham," 
Smith. Misc. Coll., VII, 47. 
"Var. michiganensis," Walker, occurs among the specimens 
from Johnson's and Cabeen's woods. 
