I903-] 



Gidley, Species of Platygomts frovi Texas. 



481 



Measurements of Type. 



Transverse. 

 10.5 mm. 



Anteroposterior. 

 Diameters, p- 11.5 :nm. 



P^ 13-5 



P* 14 



m* 17-5 



" m* 20 



m* 25.5 



Total length of series loi mm . 



Position of palatal notch back of posterior molars 48 mm . 



14 



155 



20 



21-5 



Measurements of two upper molars of Platygonus rex Marsh. 



Anteroposterior. 

 Diameters, m- 10 mm. 



Transverse. 

 16 mm. 



(These measurements are taken from Marsh's figures and confirmed 

 by the measvirements of the cast.) 

 [July, igoj.] 31 



