Qeniis Reithrodontomys (Harvest Mice) 



Harvest mice resemble the common house mouse in color, but 

 are usually whiter underneath the body. Size small, about half 

 that of the house mouse. Tail long, scantly haired, upper incisor 

 teeth grooved. Total length 5 to 6 inches. 



Colorado Species of Harvest Mice. 



Nebraska Harvest Mouse, Reithrodontomys dychei nebrascensis. 



Big-Eared Harvest Mouse, Reithrodontomys megalotis. 



Mountain Harvest Mouse, Reithrodontomys montanus. 



The distribution of the three species of harvest mice is, roughly 

 speaking, over the plains of the eastern part of the State, the San 

 Luis Valley and the southwestern counties. 



The food of harvest mice is similar to that of the grasshopper- 

 mouse, although it is possible that they destroy more grain. 



Genus Peromyscus (Deer-Mice) 



The genus Peromyscus comprises our well known white-bellied 

 or deer-mice. Small rodents, usually with large ears, tail bicolor, 

 long, small cheek pouches, shining black eyes, soft fur, feet and 

 under parts white. Upper parts vary from tawny brown to dark 

 brown, pale brown to buff. Pelage of young, steel blue or slaty 

 gray. Total length from 6 inches to 7i/4 inches. Common all over 

 North America, from the extreme southern border to the Arctic 

 Circle. 



Fig. 3. Deer Mouse (Peromyscus ih. nehracensis) . From a specimen 

 taken at Ft. Collins. Original. M. A. Palmer, Delineator. 



Colorado Species of Deer-Mice. 



Tawny Deer-Mouse, Peromyscus manicidatus rufimts. 

 Nebraska Deer-Mouse, Peromyscus manicuJatus nebrascensis. 

 Golden-Breasted Deer-Mouse, Peromyscus crinitus auripectus. 

 Tornillo Deer-Mouse, Peromuscus leucopus tornillo. 

 Rowley's Deer-Mouse, Peromyscus boyleu roivleyi. 

 True's Deer-Mouse, Peromyscus truei truei. 



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