232 TJniversiiy of California Puhlioations in Zoology [Vol. 21 



from Eureka and another from Mad River, Humboldt County. Con- 

 sidering the paucity of specimens from the coast then available, and 

 the fact that the former skin was without a skull, it seems safe to 

 assume that both of these examples should now be referred to eureka, 

 especially when it is considered that, at certain times of the year, the 

 two forms are quite similar in coloration. 



Zapus pacificus alleni Elliot 

 Allen Jumping Mouse 



Zapus alleni Elliot (1898, pp. 212-213). 

 Type. — Female; Pyramid Peak, Eldorado County, California; collected by 

 W. W. Price (fide Elliot, 1898, p. 212), 



Range. — Boreal Zone of the Sierra Nevada from Kern Peak, 

 Tulare County, California, north to Mount Shasta; thence west and 

 south through the Trinity Mountains to northern Trinity County. 

 Also South Yolla Bolly Mountain, Tehama County. Number of speci- 

 mens examined, 215, from the following localities in California : Tulare 

 County : Jordan Hot Springs, 10 ; Kern Peak, 1 ; Red Rock Meadow, 1 ; 

 Sequoia National Park, 1. Fresno County : Hume, 1. Mono County : 

 Mammoth, 17 (coll. A. B. Howell) ; Mono Lake P. 0., 4; Walker Lake, 

 5 ; Leevining Creek, 2 ; "Williams Butte, 2. Mariposa County : Wawona, 

 1 (coll. Biol. Surv.) ; Merced Grove Big Trees, 6; Indian Canon, 9. 

 Yosemite National Park: Chinquapin, 12; Mono Meadow, 4; Lyell 

 Caiion, 8 ; Porcupine Flat, 9 ; Mount Hoffman, 4 ; Merced Lake, 5 ; 

 Yosemite Creek, 9; Yosemite Falls, 8. Eldorado County: Fyffe, 1; 

 Phillips, 5 (coll. D. R. Dickey) ; Emerald Bay, 6 (coll. Biol. Surv.). 

 Plumas County: Bucks Ranch, 5 (coll. D. R. Dickey), Shasta County: 

 Mount Lassen, 3 (coll. Biol. Surv.). Siskiyou County: Mount Shasta, 

 12 (6 in coll. Biol. Surv.) ; Sisson, 1 (coll. A. B. Howell) ; Salmon 

 Creek, 2 ; Rush Creek, 6 ; Bear Creek, 1 ; Grizzly Creek, 1 ; Jackson 

 Lake, 1; south fork Salmon River, 7. Trinity County: north fork 

 Coffee Creek, 32. Tehama County : South Yolla Bolly Mountain, 15. 



Diagnosis. — A bright-colored Zapus, usually with a white tip to 

 the tail. Typical skulls differ from those of pacificus in having the 

 brain-case more inflated and the whole cranium with a more robust 

 appearance. The interorbital width is greater, rostrum heavier 

 with wider nasals, incisive foramina wider and not so constricted 

 posteriorly, interpterygoid fossae slightly wider, and bullae smaller. 



