Dr. N. Severtzoff on the Mammals of Turhestan. 171 



64. Anfilope saiga. 



I never met with this species, except in Avinter, when it is 

 tolerably common throughout Turkestan, with the exception 

 of the Zarevshan districts and the Kisil-kum steppes, ex- 

 tending as far as the sea of Aral. For the summer it leaves 

 this country for the north. 



65. Ovis Karelini^ sp. n. 



I met with this species in the high mountains of the north- 

 eastern portion of Turkestan, where it kept all the year round. 



[Cf.infrh.) 



66. Ovis Polii, Blyth. 



Inhabits the summits of the mountains of North-eastern 

 Turkestan, and does not descend below about 10,000 feet, 

 keeping mostly just below the range of perpetual snow. 

 {Cf.infrh.) 



67. Ovis Heinsii, sp. n. 



At the same altitude as 0. Karelini, only south of the 

 localities inhabited by the latter. ( Cf. infra.) 



68. Ovis nigrimontana^ sp. n. 



In the western Thian-Shan mountains and the Karatau this 

 animal is a resident in the larch-wood and apple- and ash-grove 

 district, about 6000 feet altitude. {Cf. infra.) 



69. Ovis aries, var. steatopyga. 



Is kept throughout Turkestan up to a height of 7000 to 

 8000 feet above the sea, and in summer even to the range of 

 perpetual snow. ( Cf. infra.) 



Ovis Karelini^ Sev. Ovis Polii. Ovis Heinsii^ Sev. 

 Ovis nigriviontana^ Sev. 



Before describing and comparing the different characters of 

 the above species of Turkestan sheep discovered by me, I 

 think it desirable for clearness to explain the different distinc- 

 tions of the species forming the genus Ovis, many of which 

 are introduced by me here for the first time. 



The specific characters of sheep consist in the different size 

 and shape of the horns and the various parts of the skull, the 

 shape of the whole head, the mane of the neck, the difference 

 in colour, and the size of the animal. The general form of the 



