A New Subspecies of Porcupine 3 
British Columbia and California specimens are contrasted. A 
careful comparison of the available Nebraska specimens with the 
published measurements and descriptions of the various described 
subspecies ofwyellow-haired porcupines, and with specimens of 
the typical subspecies, convinces me that the Nebraska animal 
may well be separated under the name 
Erethizon epixanthum bruneri subsp. nov. 
NEBRASKA YELLOW-HAIRED PORCUPINE 
Type—Three miles east of Mitchell, Scottsbluff county, Ne- 
braska, September 26, 1915. ¢ adult (No. 305, Collection of 
State Entomologist, University of Nebraska). J. E. Dorothy, 
collector. 
Subspecific Characters——Similar to E. epixanthum epixanthum 
Brandt,? of California, but slightly larger, with the hind feet 
comparativly shorter, the general coloration paler and duller, the 
under side of the tail largely or wholly brownish yellow, the nasals 
broader in front and much more narrowed posteriad, the audital 
bullae larger, and the sagittal, supraorbital and occipital crests less 
developed, especially in the male; similar also to EF. epixanthum 
nigrescens Allen,* of northern British Columbia, but slightly 
larger, general coloration much paler and less blackish, and 
osseous crests of skull much less developed; larger, with the 
coloration paler and less yellowish than E. epixanthum myops 
Merriam,® of Alaska, and differing further in the larger skull 
with the brain case broader posteriorly, and other cranial char- 
acters; very similar in its pale, dull coloration to FE. epixanthum 
couest Mearns,® of Arizona, but with the skull much larger 
throughout than in the type of that subspecies, and probably the 
whole animal larger. 
Color—Adult in winter pelage: Upper parts copiously clothed 
with a fine, soft, woolly, black or blackish underfur which mostly 
conceals the white, dark brown to blackish tipped quills, which 
3 Mem. Acad. St. Petersburg, IX, pl. 1 (1835). 
4 Bull. Amer. Mus. Nat. Hist., XIX, pp. 521-567 (1903). 
5 Proc. Wash. Acad. Sci., Il, pp. 27-28 (1900). 
6 Proc. U. S. Nat. Mus., XIX, pp. 719-724 (1807). 
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