72 Bulletin American Museum of Natural History. [Vol. XIV, 



males often forms a white band behind the horns ; in others it is partly in front 

 of them and partly behind them, or entirely in front of them. 



Females and Young Males. The females and young males are similar, as re- 

 gards the light markings. The white on the head is somewhat variable in 

 respect to purity and extent in different individuals ; it is never wanting and 

 averages about as above described. 



Young. A young female calf, probably not more than six weeks old, killed 

 at Fort Conger May 18, 1899, is nearly black throughout, except for the grayish 

 ears, whitish nose, dingy brown feet, and a lighter, brownish, incipient saddle- 

 mark on the back, being much darker than the adult and half-grown speci- 

 mens, and with only a trace of the white face-spot of the adults. 



Measurements. Unfortunately, as already explained, no measurements 

 were taken from the animals before skinning. The following are from 

 MEASUREMENTS OF MOUNTED SPECIMENS OF 

 Ovibos moschatus AND O. ivardi. 



mounted specimens, and probably do not vary much from the true dimensions. 1 

 For comparison, perfectly comparable measurements (in millimeters) are given 

 of three mounted specimens of O. moschatus from the Barren Grounds east of 

 the Mackenzie River, 



Skull. The skull does not appear to differ materially in size or proportions 

 from that of O 9 moschatus. But there is a marked difference in the size and 

 form of the basal portion of the horns, as shown in the accompanying 

 illustrations (Figs. 1-5). The greatest width (taken with calipers) at the ex- 

 treme base is one fourth less in O. wardi than in O. moschatus, and at 100 

 mm. from the base, one sixth narrower, resulting in very different outlines for 



1 Mr. Peary's measurements of the calf killed at Fort Conger, May 18, 1899, are as follows : 

 " Length over all, 3 feet 5 inches (1019 mm.) ; height at foreshoulder, 2 feet (610 mm.) ; girth 

 of chest, 2 feet 3 in. (584 mm.) ; girth of abdomen, 2 feet i in. (511 mm.) ; girth of neck, i foot 

 3 in. (330 mm.). Eyes, black. Weight, 43 pounds." 



