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IOWA ACADEMY OF SCIENCE Vol. XXIV, 1917 
Family MURIDAE. 
Peithrodontomys megalotis dychei Allen. — Prairie Harvest 
Mouse. This is a western form that is apparently working is way 
to the north and east. The type locality was Douglas county, 
Kansas, and the geographical distribution includes Kansas, Mis- 
souri, Nebraska, South Dakota, Iowa, southern North Dakota, 
southeastern Montana, eastern Colorado and eastern Wyoming. 
Specimens are at hand from the following localities in Iowa: 
Tama, Wall Lake, Ottumwa, Logan and Jefferson. In addition 
to these localities, this form has been recorded from Fairport, 
Atlantic, Hillsboro and Palo Alto county. These Iowa records 
thus indicate that this form is ciuite generally distributed over 
the state. 
Pitymys pinetorum nemo rails (Bailey). — Woodland Meadow 
Yole. Another southern form that is apparently extending its 
range northward. It has previously been recorded from Iowa 
but not from Iowa City or Ottumwa, 0 the localities of the two 
specimens thus far obtained. The type locality was Stilwell, 
Boston Mountains, Indian Territory. 
Synaptomys cooperi gossi (Merriam). — Goss’ Lemming Yole. 
This is probably the form recorded by Professor Herbert Os- 
born (Proc. Ia. Acad. Sci., I, 43, 1887-89) and from Fairport 
by Mr. T. Yan Hynihg (Proc. Ia, Acad. Sci., XX, 311, 1913). 
In his work on “The Mammals of Illinois and Wisconsin” (Pub. 
Field Mus. Nat. Hist., Zool. Ser., Yol. XI, 236, 1912), Mr. 
Charles B. Cory records a specimen from Knoxville. In our 
work thus far one specimen has been received, from Logan in 
Harrison county at the extreme western border of the state. 
Family LEPORIDAE. 
Sylvilagus floridanus mearnsi (Allen). — Mearns Cottontail. 
Common or abundant in practically all parts of the state and in 
some localities does considerable damage to nursery stock. In 
one of the large nurseries in southwestern Iowa men are em- 
ployed during the winter months to spend their entire time 
hunting these pests. 
Lepus townsendi campanius (Hollister). — White-tailed Jack 
Babbit. This form seems to be increasing its distribution in 
Iowa very rapidly, the wave of dispersal moving east and south 
from the north and west. At Waukon, in the extreme north- 
