MAMMALS 293 



0. I. ruidoscD (Stone and Rehn) . Color dark : southern New Mexico 

 and southeastern Arizona. 



0. /. longipes (Merr.). Size large; length 190 mm.; tail 48 mm.; 

 hind foot 25 mm.; color dull: central and southern Texas. 



0. /. hreviaiiritus Hollister. Like O. I. longipes, but darker and 

 with a shorter tail, are and hind foot: eastern Nebraska and central 

 Kansas and Oklhaoma. 



0. torridiis (Coues). Body fulvous brown above and white beneath; 

 length 150 mm.; tail 50 mm.; hind foot 20 mm.: southwestern United 

 States; Mexico, 



Subspecies of 0. torridus 



O. t. torridus (Coues). Southwestern Texas, southern New Mexico, 

 southeastern Arizona and northern Mexico. 



O. t. perpallidus Mearns. Size larger: western Arizona. 



0. /. pulcher (Elliot). Size small; length 136 mm.; color very pale: 

 deserts of southern California. 



0. t. longicandiis (Merriam). Size large; color pale: 

 southwestern Utah; northwestern Arizona, Nevada and 

 Inyo and Mono counties, California. 



O. t. tularensis Merr. Color grayish drab above: upper 

 San Joaquin Valley, California. 



0. t. ramona (Rhoads). Color very dark: southwestern 



California. 



Fig. 161. 



2. Reithrodontomys Giglioli. American harvest mice, incisor teeth 

 Body small and slender; tail long, being a third or a half ^^^^y^'Z^a- 

 the body length; ears prominent; anterior face of upper lotis (frovi 

 incisor with a deep longitudinal groove (Fig. 161); sole of ' ^"'^"^ ' 

 hind foot with 6 plantar tubercles: 50 species, in tropical and sub- 

 tropical America; 6 species and 17 subspecies in the United States; 

 mainly nocturnal animals which live in open, grassy places, often 

 near water, and feed upon grains, fruits and vegetables. Most 

 species build a globular nest of grass often elevated above the 

 ground in weeds or bushes and raise from 3 to 7 young in a litter and 

 several Utters a year. They resemble the house-mouse in appearance, 

 but may be distinguished by the browner colors, more hairy tail and 

 grooved upper incisors. 



R. humulis (Audubon and Bachman) (Fig. 162). Eastern harvest 

 mouse. Color dark brown above mixed with pinkish cinnamon, darker 

 on the head and middorsally; whitish beneath; length 120 mm.; tail 

 57 mm.; hind foot 16 mm.: southern States. 



