1 96 Bulletin American Museum of Natural History. [Vol. XIX, 



the median dorsal area, lighter or gray on the sides, and light gray on 

 the ventral area. Light phase: Whole dorsal area with the longer 

 hairs grayish brown, sides and ventral surface lighter, with the under- 

 fur light gray or grayish white. The general effect over the dorsal 

 area is dark gray, instead of dark brown as in the dark phase. The 

 specimen in moult has the whole head, limbs, and posterior third of 

 the back dark seal brown, and the pelage very short; the rest of the 

 body is still in the long pure white winter coat, but on parting the dense 

 winter pelage a blanket of short brown fur and hair is found sprouting 

 beneath the winter coat, these short brown hairs being longest and most 

 abundant near the junction of the areas covered respectively by the 

 summer and winter coats. 



I also take this opportunity to correct an error in my account of the 

 Kamchatka Bighorn (antea, p. 130). Since the distribution of my 

 paper on Siberian Mammals Mr. Lydekker has called my attention to 

 his paper, ' The Wild Sheep of the Upper Hi and Yana Valleys,' (P. Z. S. , 

 1902, pp. 80-85, pll. vii and viii), which I (most inexcusably) over- 

 looked in writing of the Kamchatka Bighorn. Apparently my speci- 

 mens are referable to Ovis borealis Severtzoff, since they agree with 

 Mr. Lydekker's description and colored figure of this species (/. c.), 

 alt hough its type loclity is about a thousand miles to the westward of 

 the Taiganose Peninsula, where my specimens were collected. I called 

 attention to the differences in coloration between my specimens and 

 the description and figure of O. nivicola as given by Lydekker in ' Wild 

 Oxen, Sheep, and Goats of All Lands,' and deeming it improbable 

 that two species of sheep would be found so near each other as the 

 Taiganose Peninsula and the points in the neighboring parts of Kam- 

 chatka where O. nivicola is known to occur (indeed, Lydekker, in the 

 work last cited, p. 224, gives the range of O. nivicola as "typically the 

 countries forming the northern shores of the Sea of Okhotsk, namely 

 the peninsula of Kamschatka on the east and the Stanovoi Moun- 

 tains on the west," etc., thus including the Taiganose Peninsula), I 

 ventured to criticise the coloring of the head given in Lydekker's 

 figure. It now appears that the criticism was unwarranted, and that 

 there are two species of Ovis living about the head of the Okhotsk Sea. 

 For the present, therefore, I am content to refer my Taiganose speci- 

 mens to O. borealis rather than to O. nivicola, with some suspicion, 

 however, that they will not prove subspecifically the same as the 

 O. borealis of the Yana River regoin, nearly one thousand miles to the 

 northwestward of the Okhotsk Sea. I certainly do not agree with 

 Mr. Lydekker in referring any of Siberian sheep to Ovis canadensis of 

 North America, even as subspecies. 



