60 NORTH AMERICAN FAUNA. [No. 22, 



gray summer pelage; similar to Lepus laJ/txtdorivs, but differing 

 slightly in color and in cranial characters. 



Color. — Fur of upperparts light plumbeous at base, succeeded hj a 

 broad zone of j'ellowish fawn and a narrow zone of dusky and tipped 

 with white; throat and rump light 'plumbeous without the fawn-colored 

 zone and white tips; legs and feet white, but the light plumbeous of 

 rump extending down a short distance on thighs; soles clay-color — 

 probably stained; chin grayish white, lighter than throat; head grizzled 

 fawn, brightest on nose and around eyes; nape grayish; occiput dusky; 

 ears dusky grayish anteriorly, edged, except at tip and anteriorlj' 

 toward the base, with white, dusky tips about 16 mm. long, mesial 

 surface white; fur on inside of ears duskj^, tipped with white. An 

 imperfect winter skin obtained near York Factor}' has the entire fur 

 pure white to base of hairs, except at extreme tips of ears, where the 

 fur is black, becoming yellowish brown toward base. 



Lepiix lalirarloriux presents a more bluish appearance than Lepus 

 arcticus ccmns, as the plumbeous element of its pelage is more con- 

 spicuous. In Jnhvddorius the plumbeous extends down on outside of 

 leg from thigh nearh' to heel. 



Skull. — No skulls of adult arctinis are available for comparison, 

 Compared with skulls of lahradoriux^ those of cainis differ as follows: 

 BuUffi flatter, rising but slightly above level of basioccipital; jugal 

 broader. A skull of a fully adult animal obtained at Fort Churchill 

 shows the cranial characters of the species better than the Hubbart 

 Point specimens, which are younger. The Fort Churchill skin resem- 

 bles very closely those taken north of that post. 



Measurements. — Tj'pe: Total length 570; tail vertebrae 80; hind foot 

 154. A topotj'pe: Total length 650; tail vertebra 83; hind foot 155. 

 Skull of adult from Fort Churchill: Greatest length 98; zygomatic 

 breadth 60; breadth across postorbital processes 39; alveolar length 

 of upper molar series 19. 



Remarlts. — These fine hares occur sparinglj' in summer throughout 

 the Barren Grounds from Fort Churchill northward. A few breed 

 near Fort Churchill, and one was obtained there August 12. In win- 

 ter they migrate to a slight extent, reaching the neighborhood of 

 York Factorj' and perhaps farther. 



Though a few signs of this species were noted on a rocky area 

 near my camp 50 miles south of Cape Eskimo early in August, I saw 

 none of the animals themselves until the morning of August 17, 

 when an opportunity was afforded for hunting over a number of low 

 morainic ridges just below Hubbart Point. Tracks made during the 

 previous night were found along the sandy beach, from which they 

 led toward the ridges where I was sure the animals would be found. 

 Carefully scanning the ground, which was covered with gray rounded 

 boulders with occasional bunches of dwai'fed willows, I hunted back 



