55^ Bulletin American Museum of Natural History. [Vol. XIX, 



26. Zapus saltator Allen. STICKINE JUMPING MOUSE. 



Zapus saltator ALLEN, Bull. Am. Mus. Nat. Hist., XII, 1899, 3. 

 March 4, 1899. Telegraph Creek, B. C. 



Five specimens, taken as follows: Telegraph Creek, July 26 

 and August 13 and 15; Shesley, September 5 (2 specimens). 

 Two of the Telegraph Creek skins were later destroyed by 

 mice, but the skulls and measurements remain. 



The yellow in the July specimen is rather paler and the back 

 less dark than in the September examples, the former being 

 in breeding pelage and the latter in fall pelage. An adult 

 male and an adult female measure respectively as follows: 

 Total length, $, 240, ?, 234; tail vertebrae, 145, 149; hind 

 foot, 32.5, 33; ear, 16, 15. 



27. Erethizon epizanthus nigrescens, subsp. nov. DUSKY 



PORCUPINE. 



Type, No. 20772, $ ad., Shesley River, August 23; M. P. Anderson. 



General coloration above black, lighter on the nape, sides of lower 

 back, and thighs, where the tips of the hairs are yellowish; beneath 

 uniform sooty black. Whole front and sides of the head sooty black, 

 with a few white-tipped hairs on the nose ; over the top of the head 

 and nape, the long hairs are broadly tipped with pale yellow; over the 

 shoulders and greater part of the back they are nearly all wholly 

 black, a very few showing a slight tipping of yellowish; over the 

 hinder back, rump, and median area of the tail the long hairs are 

 wanting, but the spines are still wholly concealed by the long black 

 underfur; the thighs and sides of the tail have the long black hairs 

 broadly tipped with yellowish white. The spines, which show very 

 plainly through the pelage on the sides of the shoulders, flanks, and 

 thighs, are white, pointed with plumbeous over the shoulders and 

 with blackish elsewhere. 



Measurements (type). Total length, 740: tail vertebras, 210; 

 hind foot, 90; ear, 27. Skull: Total length, 105; basal length, 99; 

 zygomatic breadth, 67 ; mastoid breadth, 42 ; nasals, ? (broken away) ; 

 upper molar series, 26. An adult female skull measures: Total 

 length, 104; basal length, 98; zygomatic breadth, 71; interorbital 

 breadth, 29; mastoid breadth, 45; nasals, ? (imperfect); upper molar 

 series, 28. 



Represented by two skins with skulls and two additional 

 skulls. The extra skulls are from Level Mountains, and the 



