134 



MAMMALIA. 



There are, as can be seen from the list below in the Musum col- 

 lection, examples of both the typical Ovis poll from the Pamir, 

 and also of the smaller form from the Thian Shan, described as 

 Ovis karelini by Severtzoff. 



After reading Severtzoff's description of the two species (O. poll 

 and O. karelini) and comparing the descriptions with the specimens 

 in the Museum, it is imposible to make out any real differences 

 between the two except that of size. 



Below is a summary of the chief difierences between Ovis poli 

 and Ovis karelini as given by Severtzoff loc. cit. : — 



Ovis poli. 



Horns. — Nuchal edge not round- 

 ed. 



Orbital surface con- 

 cave. 



Horns four times the 

 length of the skull. 



Terminal axis of horns 

 more or less horizon- 

 tal. 



Cone formed by the 

 horn-spiral, narrow- 

 ing towards the skull, 

 i.e., base outwards. 

 Skulls. — Premaxillae do not arti- 

 culate with the nasals 

 and the maxillae are 

 separated by small 

 bones. 



Lacrymals protrude 

 forward beyond the 

 malars, and both 

 articulate with the 

 maxillae by serrated 

 sutures. 

 Skins. — Mane pure white. 



Light brown of back 

 shades into the white 

 of belly. 



White patch of tail 

 marked and separat- 

 ed from the light 

 brown of back by a 

 dark line. 



Ovis karelini. 



All edges rounded. 

 Orbital surface flat. 



the 



Horns only three times 



length of the skull. 

 Terminal axis of the horns 



parallel to the basal axis. 



Cone formed by the horn-spiral 

 with its base towards the 

 skull. 



Neither premaxillae, maxillae or 

 lacrymals articulate with the 

 nasals. 



Lacrymals very large and 

 square, wider than the malars. 



Mane white, shaded with gray. 



Light bro\%'n of back separat- 

 ed from the white of belly 

 by a dark line. 



Light brown of back shades off 

 to tail, forming a not well 

 defined patch. 



Taking these characters one by one in our specimens — 



(i) The nuchal edge is most rounded in the largest specimen 



