MUEID^. — CLXXXV. 323 



549. PEROMYSCUS Gloger. (nljpa, pouch; fiva-Kos, little 

 mouse.) 



1055. P. michiganensis (Audubon & Bachman). Yellowish 

 brown, a sooty dorsal band; belly white; feet not quite white; 

 tail bicolor; hind feet less than f inch. L. 4j. T. li. Mich, to 

 Dak. and Kan. 



1056. P. nuttalli (Harlan). Golden Mouse. Golden cinna- 

 mon, especially bright on ears ; belly not pure white ; tail unicolor. 

 L. 6. T. 2^. Va. and S. (To Thomas Nuttall.) 



1057. P. leucopus (Rafinesque). Common White-footed 

 Mouse. Deer Mouse. Yellowish brown, grayish or fawn color; 

 belly and feet jiure white ; tail distinctly bicolor ; hind feet more 

 than 1^ inch. The northern form has been called subspec. 

 noveboracensis (Fischer), but the need of separation is question- 

 able. L. 6,^. T. Sj. Abundant everywhere in open fields; 

 variable. (KevKos, white ; ttovs, foot.) 



1058. P. canadensis (Miller). Larger than P. leucopus, longer, 

 more hairy tail, which is always bicolor; young gray. L. 8. T. 4. 

 Graylock, Mass., to Adirondacks and N. In dense woods. 



Subspec. umbrinus Miller. Smaller, yellower, with much dark 

 shading, especially on back and face. L. 7. T. 3|. Lake Ontario 

 to Lake Huron. (Lat., shady.) 



Subspec. abietorum Bangs is recorded from fir forests of Nova 

 Scotia. (Abies, fir.) 



1059. P. gossypinus (Le Conte). Cotton Mouse. Larger 

 than P. leucopus. L. 6j. T. 2i. Rusty brown, with a dorsal wash, 

 ashy white below; tail not paler. Cotton fields, S. probably N. to 

 Va. (gossypiwn, cotton.) 



550. ONYCHOMYS Baird. (ow|, claw; fivs, mouse.) 



1060. O. leucogaster (Maximilian). Mouse color, snow white 

 below; ears high, furred. L. 5^. T. 1^. Minn, to Kas. and 

 Montana. (KevKos, white; yaa-Tfjp, belly.) 



551. NEOTOMA^ Say & Ord. (veos, new ; TOfios, cutting, 



i. e. rodent.) 



1061. N.pennsylvanica Stone. Wood Rat. Brownish gray ; 

 the sides tawny ; belly and feet all white ; tail scantily hairy. L. 13. 

 T. 5. Hudson highlands to Va. Rare and local. 



•I Representative of the sub-family of Murinae is the Old World genus: 

 Mus Linnseus. (jj-Os, mouse.) 



3f. deciimanvsVaMas. Brown rat. Wharf Rat. Tail nearly an inch shorter 

 (han head and body ; grayish brown above ; paler below; feet dusky white; 

 far mixed with stiff hairs; cosmopolitan; introduced into America about 1775, 



