94 CATALOGUE OF UNGULATES 



forming more than a complete 

 circle; length from 59 to 62 in., 



girth 18 to 20 in. No ruff* 0. a. amnion. 



h' . Horns less everted, with first turn 

 nearly vertical, forming about a 

 circle, and front outer angle often 

 distinct; length from 485 to 57 in., 

 girth 17 to 19 in. A ruff at all 



seasons* 0. a. hodgsoni. 



c' . Closely allied to last, but with front 

 outer angle of horns rounded off. 

 Known horns ranging from 41 to 

 5O2 in. in length, with a girth of 



from 16 j to 18 in 0. a. mongoUca. 



iV. Horns smaller ; length from about 45^ 



to 47 in., girth 144 to 154 in 0. a. sairensis, 



b. Horns slighter and forming a more open 

 curve, frequently with outer front 

 angle strongly pronounced. 

 a'. General colour in winter rufous, thighs 

 coloured like back, no distinct 

 rump-patch, tail yellowish above, 

 muzzle white ; throat-ruff yel- 

 lowish. 

 Horns moderately extended; length 



55 to 58 in., girth 17 in 0. a. littledalei. 



b' . General colour in winter pale fawn, 

 thighs, rump-patch, tail, and ruff 

 white ; face light-coloured. 

 a''. Horns of general type of little- 

 dalei, but apparently somewhat 



thicker; rump-patch small 0. a. karelini. 



b". Horns of same general type, but 

 with outer front angle fre- 

 quently rounded off; rump- 

 patch larger 0. a. humei. 



c". Horns slender and forming a more 

 open and extended spiral than 

 in any of the other races, with 

 front outer angle generally pro- 

 nounced ; length of fine speci- 

 mens 69 to 75 in., girth 14j to 



16 in., or, rarely, 17 in 0. a. poli. 



B. Size smaller. 



((. General colour in winter dark brown, 

 gradually shading into white of 

 under-parts, a white rump-patch 

 and muzzle, tail greyish brown 

 above, throat-ruff greyish white. 

 Horns of the littledalei type ; 



length 35f to 38 in., girth lOj in. 0. a. nigrimontana. 

 b. Imperfectly known. Horns apparently 

 more of the ammon form ; length 

 in type 40 in., girth llj in 0. a. storcH. 



" Blanford, Proc. Zool. Soc. 1896, p. 787. 



