North-Western Bighorn 217 



This race is typified by an adult mounted male from the Liard river in 

 the British Museum, partially described by CoL }. Biddulph on pp. 679 

 and 680 of the Proceedings of the Zoological Society for 1885. It is in the 

 winter pelage, and appears to be nearly allied to the north-western race, 

 but is as large as the typical representative of the species. Unfortunately 

 the north-western race is described from specimens believed to be in the 

 summer pelage, and it is therefore by no means improbable that in winter 

 they might develop a similar mane, and display equal lightness in the 

 colour ol the tace as compared with that of the body. Even, however, if 

 such were the case, the present form would apparently be differentiated by 

 its larger size, and since it inhabits an area lying between that ot typica and 

 sfoih'l, it may at least provisionally be allowed to rank as a separate race. 



Distrihiitiou. — Typically the neighbourhood of Liard river, near the 

 northern extremity of the Rocky Mountains, in about latitude 59" N. 



d. North-Western Rack — Ovis canadensis stonei 



Ovis stonei, J. A. Allen, Bull. Amer. Mi/s. vol. ix. p. i i i, pis. ii. and iii. 

 (1897); Nelson, Nat. Geographic Mag. vol. ix. p. 12S (1898). 



Characters. — The original description of the adult male, apparently in 

 the summer pelage, runs as follows : — " Above gray, formed by an 

 intimate mixture of whitish and blackish-brown ; face, ears, and sides of 

 neck lighter and more whitish, being much less varied with blackish- 

 brown ; whole posterior area and lower-parts from hinder part ot back 

 downward and forward, including the posterior aspect of thighs, and the 

 abdomen, white, the white area narrowing anteriorly and terminating in 

 a \'-shaped point on the middle of the chest ; also a broad sharply-defined 

 band of white on the posterior surface of both fore- and hind-limbs, 

 extending from the body to the hoofs, and above including also the inner 

 surface ; front of neck, from base of lower jaw posteriorly to the white 



2 F 



