NOTES ON SOME IOWA RODENTS* 
DAYTON STONER. 
During portions of the past three summers some investiga- 
tions of the rodents of Iowa have been made under the auspices 
of the Iowa Geological Survey. These studies have been carried 
On more particularly in an attempt to determine the economic 
status of this group of animals in the state but other phases of 
the work such as matters of distribution, local abundance, etc., 
of the various species have also been included. 
In pursuance of this problem, various parts of the state have 
been visited for the purpose of making observations and obtain- 
ing data and an attempt has also been made to secure the in- 
terest. and cooperation of others in this work. In part, as a re- 
sult of the assistance thus obtained, material has been received 
from various sources. Some of this material is of especial in- 
terest regarding the distribution of certain -species and it is with 
the idea of briefly presenting these facts 1 that a report is offered 
at this time. In this paper two forms are for the first time 
recorded from Iowa and the known distribution of some others 
has been extended. 
Acknowledgment for the determination of material is due 
Mr. E. W. Nelson, chief of the United States Biological Sur- 
vey and to Mr. A. IT. Howell, assistant biologist in the United 
States Biological Survey. 
Family SCIURIDAE. 
Sciurus hudsonicus minnesota Allen. — Minnesota Chickaree. 
Two specimens of this form have come to hand from Charles 
City, Floyd county, and afford the first definite record for the 
state. The type locality was Fort Snelling, Hennepin county, 
Minnesota, and the geographical distribution will now include 
northern Iowa as well as southern Minnesota and Wisconsin 
and eastward to northern Indiana. The form minnesota aver- 
ages a little larger than h, hudsonicus, which latter is much more 
common in the state. 
^-Published by permission of Prof. G. F. Kay, Director of the Iowa Geo- 
logical Survey. 
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