NOTES ON THE MAMMALS OBSERVED IN 
MARSHALL COUNTY, IOWA 
IRA N. GABRIELSON 
Few specific locality records for mammals in central Iowa 
have ever been published. The following brief notes, there- 
fore, have been prepared for the purpose of making available 
for future workers on Iowan mammalogy the information I am 
able to give. This list is not complete but comprises only such 
notes and specimens as came to my hands in one way or another 
during three years’ residence. 
1. Opossum. Didelphis virginiana 
A small boy brought an opossum to me on November 4, 
1914. He had caught the animal in a trap and wanted to know 
what it was as neither he nor his father had ever seen anything 
like it. 
2. Flying Squirrel. Glaucomys volans volans 
Common in the timber near Marshalltown. At different times 
I had two individuals in captivity and they made the most in- 
teresting pets I ever had. November 17, 1914, a single in- 
dividual was brought to me by a hunter. On December 12, 
1914, a dead adult and a live, partly grown, young one were 
secured by a companion on a hunting trip and given to me. 
3. Western Fox Squirrel. Sciurus niger rufiventer 
Common, especially within the city limits of Marshalltown, 
where half wild ones lived along the streets. One living near 
my home very frequently came and perched on my shoulder to 
ride along the street for some distance. 
4. Gray Chipmunk. Tamias striatus griseus 
Common in the timbered sections along the Iowa river and 
Linn creek. Several were brought to me alive at different times 
by members of the high-school classes. 
5. Thirteen-lined Ground Squirrel. Citellus tridecemlineatus 
tridecemlineatus 
Common throughout .the pasture lands of the county. 
6. Franklin’s Spermophile, Citellus franklini 
Quite common, particularly north of Marshalltown. 
