:&EOBOSCIDIA FROM BALUCHISTAN.' 



619 



tology except for descriptive purposes, and as other material 

 becomes available from new sources, all these distinctions will be 

 merged in the mass of small variations from which new mutations 

 will eventually arise. Moreover, but few specimens of augustidens 

 have, as yet, been obtained from India, and additional material 

 is required to show whether the differences here noted are con- 

 stant or not. 



Text-iisrure 6. 



Bunolopliodon augustidens. First lower molar in side view. X 1. 



Of the other lower teeth, the second molar is rather diSerent 

 from a French specimen from Simorre (B.M. No. 42720) in being- 

 longer and narrower in piopoi'tion, in the more widely open valleys, 

 and in the greater prominence of the talonid ridge, where the two 

 cusps stand up very prominently (text-fig. 2). Of first lower 

 molars there are several specimens, one of them (text-fig. 6 and 



Text-fie'ure 7, 



BuiMlophodon angmtidens. First lower molar (B.M. No. 29671) from Simorre, 

 ill side view. X 1. 



PI. ly. fig. 1) absolutely unworn. Compared with two specimens 

 (text-fig. 7), also unworn, from Sansan and Simorre respectively, 

 the Indian tooth is rather longer for its breadth and is widest at 

 the last ridge ; the valleys, as in the other lower molars, are 

 less blocked by the accessory cusps. The talonid is formed of two 



