122 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



It will be observed that the Afton tooth is both shorter and nar- 

 rower at the base, but that it expands more rapidly upward. At 

 the summit its length is 53 mm. Its whole height is 60 mm. 



Another tooth is a lower left hindermost molar, now in the de- 

 partment of anthropology. Its dimensions in millimeters are here 

 compared with those of the corresponding molar of the type speci- 

 men of 0. huerfanensis and those of a specimen from Minidoka, 



Idaho. 



MBASDREMENT OF LOWER HINDERMOST MOLARS. 



The Afton tooth is seen to be somewhat smaller than the others. 

 It differs from the others in having on the inner face a pronounced 

 groove opposite each of those on the outer face, and in having in 

 front of each groove a pretty strongly developed style. There is a 

 part of another lower third molar, the second and third lobes, in the 

 department of paleontology. Two upper fourth premolars are pre- 

 served, one in each of the departments mentioned. The one in the 

 department of anthropology is little worn; the other (Cat. No. 9109) 

 is well worn. The following measurements allow these to be com- 

 pared with the corresponding tooth of C. huerfanensis : 



MEASUREMENTS OP UPPER FOURTH PREMOLARS. 



While one must expect differences in the size of teeth of these 

 camels, they are so great between the form found at Afton and the 

 corresponding teeth of the type of G . huerfanensis that it appears to 

 be better to refer those from Afton to G. kansanus, with some doubt. 



CAMELOPS NITIDUS, new species. 



Plate 7, figs. 3-8. 

 Type specimen. — A lower first molar, No. 9111, United States 

 National Museum. 



Type locality.— -Region about Afton, Oklahoma. 

 Type formation. — Pleistocene. 



