326 Dr. N. Sevevtzoff on the Mammah of Turkestan. 



and the nasals are separated from each other by a long narrow 

 bone, whilst the ])ra?niaxill.'e do not reach quite so far as the 

 nasals, articulating with the maxillaries; this corresponds with 

 the large nostrils, and forms one of the best characters of the 

 present species. 



The skulls of these sheep, as stated above, have been found 

 in the Tockmack district ; but no further particulars as to the 

 exact })lacc arc known, and consequently the exact geographi- 

 cal distribution is uncertain. Some greyish brown sheep seen 

 by me in the Alexandrovsk district near Merke seemed to 

 belong to this sj)ecies ; they were found at an elevation of 

 8000 feet above the sea-level, also near the rivers Katchara 

 and Chu, where the Kirgies tribes also informed Mr. Semenoff 

 about these sheep ; they could hardly be 0. Polii. 



The horns of 0. Heinsii are not much smaller than those 

 of 0. Polii of the same age. The skull of a specimen of 0. 

 Ileitisii aged live years measures 11 inches 4 lines, the 

 length of the horns is 33 inches 2 lines, and the extent 

 between the tips is 31 inches 4 lines ; whilst the same measure- 

 ments of 0. Polii of a corresponding age are 12 inches 6 lines, 

 37 inches, and 35 inches respectively. I tried to calculate by 

 these figures the size of an adult 0. Heinsii, judging by the 

 affinity of 0. Polii, taking also into consideration the different 

 directions of the horns in both species ; and the result is the 

 following : — length without the tail about 5f feet, height at 

 the shoulders 3| feet ; length of the horn 4 feet ; the extent 

 between the ends of the horns 37 to 38 inches, or a little 

 over 3 feet. 



These are the probable measurements of an adult male of 

 0. Heinsii. The species might easily be mistaken by the 

 Kirgies tribes for 0. Polii. 



Ovis nigrimontana. 



I have called it by this name because of its having been 

 found at first in the Karatau mountains (which means black 

 mountains, or nigri monies). 



The frontal surface of the horn is convex, the other two are 

 concave ; and in consequence the edges are sharp, in particular 

 the nuchal edge. In the section at the base of the horn, the 

 nuchal and orbital surfaces are almost equal in breadth, each 

 of them being about half as broad again as the frontal 

 surface. 



The axis of the skull and the basal chord of the horn form 

 an angle of 38°, the median and basal chords 23°, and the 

 angle fonned by the terminal ascending chord of the horn and 

 the axis of the skull is 63°. 



