l28 JShrriam— Three Xev Kannnroo Jfire. 



Museum, Biological Survey rolled ion. :\[iiy 11. 1S9S. H. C. Oberhol- 

 ser. Original No. 101. 



Characters. —S\7.e slightly larger than megacephaJus; pelage long, soft. 

 lax and Huffy; tail decidedly longer and without dark tip; body much paler. 



Co/or. Fpiierparts pale huffy fulvous, finely and inconspicuously lined 

 with dark-lipped hairs; uuderparts, including sides of nose, lower sides 

 of face,Jegs, feet, and underside of tail while; up[)erside of tail huffy 

 throughout without dark tip. 



Cranial characters. — Skull es.sentially as in megncephalns. 



Measurements. —Type specimen ( 9 ad.): total length 171; tail vertebrae 

 102; hind foot 25.5. 



Microdipodops californicus sp. nov. 



Tgpe from Sierra Valley, near Vinton, Plumas County, California. 

 Xo. 101,227, S yg-ad., U. S. National Museum, Biological Survey Col- 

 lection. August 7, 1900. Walter K. Fisher. Original No. 1596. 



Characters. — Size of megacephalus; tail and hind foot longer; pelage 

 more compact and less fluffy than in Ihe other species; color olivaceous 

 nnderparts and head markings snoiv vliite. 



Color. — Upperparts olivaceous, finely and inconsi)icuously lined with 

 dark-tipped hairs; underparts, feet, sides of nose, spot over eye, patch 

 behind ear. and mark on upper and lower folds of ear, snow white; tail 

 above pale buffy fulvous becoming blackish toward tip; below white 

 throughout; side of face below body-color, and outer side of foreleg, 

 washed with i)ale buft'y fulvous. 



Crnnitd characters. — Skull as a whole similar to that of megacephalus 

 but decidedly smaller, due chiefly to smaller size of audilal capsules, 

 the skull ])roper being about the same size; notch between bulging bulhe 

 posteriorly broader; nasals decidedly more slender. 



Measurements. — Type specimen ( $ yg-ad.): total length l.")8; tail verte- 

 brje 91; hind foot 25. Average of 10 from type locality: total length 

 IGO; I ail vertebrae 92; hind foot 25. 



*Xorth America Fauna No. 5, pp. 115-117, August, 189.1. 



