32 MAMMALS. 



FOOTED MOUSE. Yellowish brown; tail distinctly bicolor, 

 about as long as head and body; hind feet more than 

 inch. N. Am.; abundant. 



2. H. michiganensis, (Aud. & Bach.) Wagner. MICHI- 

 GAN MOUSE. Tail little longer than body without head, 

 bicolor; hind feet less than f inch; dark brown; a 

 darker dorsal band; L. 3, or less, to base of tail. Upper 

 Miss. Valley to Mich., etc. 



3. H. aureolus, (Aud. & Bach.) Wagner. RED MOUSE. 

 Yellowish cinnamon, bright especially on ears; belly not 

 pure white. Pa. to Ills., and S. 



** Soles naked ; tail scant-haired, about as long as head and body ; 

 ears small. (Oryzomys.} 



4. H. pa/usfris, (Harlan) Baird. RICE -FIELD MOUSE. 

 Blackish and ashy above, becoming paler below; fur 

 harsh, but compact; a large rat -like species. S. States, 

 N. to N. J. and Kas. 



4. OCHETODON, Coues. HARVEST MICE. 



< Reithrodon, Baird. 



1. 0. humilis, (Aud. & Bach.) Coues. HARVEST MOUSE. 

 Tail shorter than head and body; appearance decidedly 

 mouse - like. U. S., southerly, N. to Iowa. 



5. EVOTOMYS, Coues. LONG -EARED MICE. 



< Arvicola, Bd. 



1. E. ruti/us (Pall.) var. gapperi, (Vigors) Coues. LONG- 

 EARED MOUSE. Color chestnut ; ears prominent ; a 

 brownish dorsal band; size of common mouse. North- 

 ern frontier, S. to Mass. 



6. ARVICOLA, Lacepede. FIELD MICE. 

 * Back upper molar with two external triangles and a posterior 

 crescent; middle upper molar with two internal triangles; 

 front lower molar with three internal and two or three lateral 

 triangles ; size large. (Myonomes.) 



