PINE MOUSE 



Intermediate Meadow Mouse. — Lagurus intermedius (Taylor) . 

 Smaller than typical curtatus, slightly larger and paler than 

 pauperrimus. Upperparts grayish, no buffy on ears and 

 nose; underparts silvery white. Total length, 4.9 inches; 

 tail vertebrae, i inch; hind foot, .68 inch. Found in the 

 Transition Zone of the Pine Forest Mountains, Humboldt 

 County, Nevada. 



Pallid Meadow yionsQ.— Lagurus pallidus (Alerriam). 



Paler and smaller than curtatus; the palest Meadow Mouse 

 found in America. Upperparts pale buffy gray, tinged with 

 buff on ears and nose; feet pale gray; tail dusky above, 

 whitish below; underparts white to soiled whitish. Total 

 length, 4.8 inches; tail vertebrae, .80 inch; hind foot. .74 

 inch. Found in "Transition prairies of western North 

 Dakota, Montana, and as far north as Calgary, Alberta." 

 (Bailey) 



Pigmy Meadow Mouse. — Lagurus pauperrimus (Cooper). 

 Smallest form of the genus Lagurus; darker than curtatus. 

 Upperparts (summer) buffy gray, lightly sprinkled with 

 dusky; strong buffy tinge on nose and ears; feet pale buffy; 

 tail with dusky dorsal line, buffy below; underparts pale 

 buffy. Total length, 4.6 inches; tail vertebrae, .80 inch; 

 hind foot, .64 inch. Found in "Eastern Washington and 

 Oregon, central Idaho, and the north slope of the Uinta 

 Mountains, Utah, in Transition Zone." (Bailey) 



* * * * * * * ■ 



The habits of the members of the genus Lagurus are 

 similar to those of other Meadow Mice; see page 433. 



Genus Pitymys ^ 



This genus has been placed as a subgenus of Microtus by 

 many authors and bears considerable resemblance to that 

 genus. Forms of Pitymys are characterized by the presence of 

 five plantar tubercles; very small ears; short tail; hip glands 

 on adult males; pelage short, dense and glossy. Members 

 of this genus are known as Pine Mice, have a mole-like appear- 

 ance due to the close, fine fur, and are rather subterranean 

 in habit. Plate XXX. 



Pine Mouse. — Pitymys pinetorum pinetorum (LeConte). 



"Size small; ears very small; tail short; fur short and fine; 

 colors bright." (Bailey) Upperparts glossy bright russet 

 brown; sides lighter; feet grayish brown; tail dark brown 

 above, lighter below; underparts dusky, washed with brown. 



^See footnote, page 415. 



437 



