Douglass : Titanotheres from Uinta Deposits. 307 



Mm. 



Length of molar-premolar series 212 



Transverse diameter of I 1 21 



Antero-posterior diameter of I 1 22 



Transverse diameter of I 2 27 



Antero-posterior diameter of I- 2 - 25 



Transverse diameter of 1^ 22 



Antero-posterior diameter of 1^ 25 



Transverse diameter of canine 24 



Antero-posterior diameter of canine 27 



Transverse diameter of P^ 22 



Antero-posterior diameter of F 2 20 



Transverse diameter of P- 3 30 



Antero-posterior diameter of P^ 24 



Transverse diameter of P 4 37 



Antero-posterior diameter of P^ 27 



Transverse diameter of Ml 48 



Antero-posterior diameter of M ' 44 



Transverse diameter of M~ 2 53 



Antero-posterior diameter of M^ 46 



Transverse diameter of M^ 53 



Antero-pos'erior diameter of M^ 46 



Manteoceras uintensis sp. nov. 



(Plate XIII, Fig. 4.) 

 (No. 2388 Carnegie Museum Catalog of Vertebrate Fossils.) 



Skull except posterior portion. Considerably crushed downward 

 and nasals fractured. From gray sandstone in red Uinta beds. Lower 

 portion of horizon "C." About five miles northeast of Well 2, Uinta 

 Basin, Utah. 



The skull is high, the forehead broad, and the zygomatic arches 

 spreading. The premaxillary region as seen from the front is broad, 

 though the incisors are only moderately large. The canines are 

 directed outward. The free nasals are short and moderately broad. 

 Apparently the infraorbital foramen is not excessively large. The 

 malar is rounded beneath the orbit and has no protuberance or shelf. 

 The zygomatic arch is not very heavy and is only moderately deep 

 anterior to the glenoid articular surface. It is not nearly so heavy as 

 in Telmatherium iiltimum. The opening of the posterior nares extends 

 forward to the middle of the second molars. Their border is rounded 

 and thickened. 



The incisors are moderately large, but not cupped. They are 

 arranged in an oblique line about half-way between a transverse and 



