Article XV. DESCRIPTION OF A NEW CARIBOU FROM 

 NORTHERN BRITISH COLUMBIA, AND RE- 

 MARKS ON RANGIFER MONTANUS. 



By J. A. ALLEN. 



A series of Caribou collected by Mr. Andrew J. Stone for the 

 American Museum in the Cassiar Mountains, northern British 

 Columbia, September 1526, 1897, were provisionally referred 

 by me to Rangifer montanus, 1 described in August, 1899, by 

 Mr. Ernest Seton-Thompson 8 from a mounted specimen in the 

 Museum of the Canadian Geological Survey, "taken in the 

 Illecillewaet watershed, near Revelstoke, Selkirk Range, B. 

 C., in 1889." A series of four specimens, two fine adult males 

 and two fine adult females, taken September 26, 1901, have 

 just been received by the Museum, collected in the Gold 

 Range Mountains, twenty-five miles southeast of Sicamous, 

 and are thus practically topotypes of Rangifer montanus. 

 These specimens show that the Caribou from the Cassiar 

 Mountains is very different from Rangifer montanus of the Sel- 

 kirks. The specimens of the two series having both been 

 taken during the last half of September, they are strictly 

 comparable as regards season. 



Rangifer osborni, sp. nov. 



Rangifer montanus ALLEN, Bull. Am. Mus. Nat. Hist., XIII, 1900, 

 Art. I., pp. 1-18, figs. 26, n, 15, and 16. Not Rangifer montanus 

 Seton-Thompson . 



Type, No. 15714, $ ad., Cassiar Mountains, British Columbia, Sept., 

 1897; Andrew J. Stone (James M. Constable Expedition). 



The largest of all known Caribou, with very long and very heavy 

 antlers, which have a low and very long backward sweep. 



Adult Male, in September. 3 General color above clove-brown, dark- 

 est on the head, back, thighs, and lower edge of the sides of the chest, 

 and still darker, blackish brown, on the breast and limbs; muzzle, in- 

 cluding the whole end of the nose and front border of the lower lip, 



1 This Bulletin, Vol. XIII, 1900, pp. 1-18, April 3, 1900. 



2 ' Preliminary Description of a New Caribou,' The Ottawa Naturalist, XIII, Au- 

 gust, 1899, pp. 129, 130. 



3 The following description and measurements are from my former paper (/. c., pp. 

 5 and 6). 



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