

2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 60 



forming a column-loop in line with the outer semi-circular lobes of 

 molar row, thus giving m z three approximately equal outer semi- 

 circular lobes. As viewed from inner side the posterior column is 

 not separated from middle column by a distinct groove, the posterior 

 two-thirds of inner surface of tooth being smoothly convex. [In 

 gutturosa, as viewed from inner side, m z presents three equal 

 columns, divided by two shallow re-entrant angles, much like the 

 outer surface of the same tooth in altaica. 1 ] Horns much more 

 spreading than horns of gutturosa, distance between tips 180 milli- 

 meters, as against 102, 103, and 135 in gutturosa; much less closely 

 ringed. 



Measurements of type, from made up skin. — Head and body, 

 1325 millimeters; tail, 12; ear from notch, 97. Skull: Greatest 

 length, 260 ; condylobasal length, 250 ; basal length, 237 ; greatest 

 breadth, 113 ; breadth of rostrum above m 2 , 79; length of nasals, 93 ; 

 breadth of opening of anterior nares, 43.5 ; length from orbit to end 

 of premaxillse, 146; length of upper tooth row, crowns, 70; lower 

 tooth row, crowns, 72 ; length of horn over curve, 270 ; distance 

 between horn tips, 180. 



Remarks. — The range of this gazelle is comparatively close to 

 that of Gasella subgutturosa sairensis, but the two species are separ- 

 ated by the Great Gobi Altai. The relationship being wholly with 

 Procapra gutturosa, the distribution is probably nearer continuous 

 with that species, and the two may eventually be found to inter- 

 grade. 



1 Examination of large series of gazelle skulls, of various species, shows 

 a remarkable uniformity in the character of this tooth in specimens of the 

 same race. 



