32 MAMMALS. 



FOOTED Mouse. Yellowish brown; tail distinctly bicolor, 

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

 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. aureolas, (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. (OryzomyB.) 

 4; H. palustris, (Harlan) Baird. Rice -meld 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, Ooues. Harvest Mice. 

 < Meithrodon, 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, Govl&s. Long -eaeed Mice. 

 < Arvicola, Bd. 

 1. E. ruiilus (Pall.) var. gapperi, (Vigors) Coues. Long- 

 eaeed Mouse. Color chestnut ; ears prominent ; a 

 brownish dorsal band; size of common mouse. North- 

 em 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. (Myonomm.) 



