MAMMALS 299 



Subspecies of P. niittalli 



P. n. nultalli (Harl.). Distribution as given above. 



P. n. aureolus (Audubon and Bachman). Size smaller: southeastern 

 States, from North Carolina, east of the mountains, to northern 

 Florida; Gulf slope to eastern Texas and north into Missouri. 



P. floridanus (Chap.). Size large; color pale ochraceous buff; 

 under parts white; length 200 mm.; tail 86 mm.; hind foot 26 mm.; 

 mamma; 6; plantar tubercles 5: central Florida, from coast to coast. 



P. crinitus (Merr.). Color buff above, white beneath; mammcX' 4; 

 length 190 mm., tail 95 mm.; hind foot 21 mm.: Great Basin, from 

 eastern Oregon and southern Idaho to Lower California. 



P. calijornicus (Gambel). Size very large, being the largest in the 

 country; length 243 mm.; tail 133 mm.; hind foot 27 mm.; color russet 

 above, mixed with black; under parts creamy white; ears very large; 

 mammae 4: coast region of California from San Francisco into Lower 

 California. 



P. eremicus (Baird). Color ochraceous buff above; white beneath; 

 tail long; length 183 mm.; tail loi mm.; hind foot 20 mm.; mammae 4: 

 deserts of southern California to western Texas. 



P. taylori (Thomas). Size very small, being the smallest of the 

 genus, and one of the smallest of rodents; length 97 mm.; tail 38 mm.; 

 hind foot 14 mm.; color pale drab; under parts smoky gray: coastal 

 region of Texas. 



4. Oryzomys Baird. Body rat-like, long and slender; tail long; 

 belly not pure white; fur coarse: 50 species, mostly in Mexico and 

 Central America; i species in the United States; the Htter numbers 

 3 to 7. 



O. palustris (Harlan). Rice or marsh rat (Fig. 165). Body dark 

 brown above, paler beneath; length 240 mm.; tail 115 mm.; hind foot 

 30 mm.: southeastern States; in coastal marches and wet lands. 



Subspecies of O. palustris 



O. p. palustris (Har.). Southern New Jersey to the Gulf States and 

 northwards to southern Illinois. 



O. p. natator Chapman. Color tawny; body larger: South Carolina 

 to Florida and southern Texas. 



O. p. coloratus Bangs. Color rich reddish brown; size large; length 

 301 mm.: central Florida. 



O. p. texensis Allen. Color paler, grayish: coast of Mississippi, 

 Louisiana and Texas; Mississippi Valley into Missouri. 



