136 Fretp Museum or Naturat History — Zooézoey, Vor. XI. 
specimens: Total length, 208 to 230; tail vertebrae, 84 to 96; hind 
foot, 31 to 32 mm. 
The Little Chipmunk is common in northern and central Wisconsin 
at least as far south as Juneau County,* but does not occur in southern 
Wisconsin or Illinois. It is easily distinguished from the larger Chip- 
munk by its small size and narrower and more conspicuous stripes. 
Its most common note is a sharp ‘“‘chip,”” somewhat resembling that 
of the larger species, but higher in pitch and more shrill. When fright- 
ened it often utters a shrill whistle. Its habits appear to be much the 
same as those of its larger relative, Tamias striatus griseus. There is 
no doubt that this species hibernates in winter but it does not retire 
to its winter home until quite late in the season, and its sleep is not so 
prolonged as that of some of its relatives. Mr. Ernest T. Seton writes, 
“In August and September the little Chipmunk emulates its cousin 
in labouring for the rainy days to come. As late as September 26 at 
Fort Resolution I saw one carrying home great bulging pouchfuls of 
skunk-grass seeds. About the end of the month, it finally plugs its 
doorway against the cold, the wet and the Least Weasel, and curls up 
for its six months’ sleep.” (J. ¢., p. 371.) 
Mr. Gerrit S. Miller found this species very abundant on the north 
IOWA = 7 
Wu: 
\ LL \ N D Eutamias borealis neglectus 
Mo. Area of intergradation 
KY. 
Map showing approximate range of the Little Chipmunk (Eutamias borealis neglectus); replaced 
from the Dakotas westward by Eulamias borealis: no oth i i 
bong serine Teme 5 other representative of this genus occurs in 
*The Field Museum collection contains 8 specimens of this subspecies from 
Camp Douglas, Juneau County, Wisconsin. 
