112 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



ramus of the lower jaw with four teeth. The upper teeth (Cat. No. 

 9004) consist of a right third molar and left second and third molars. 

 These are practically free from any loess, while the lower teeth (Cat. 

 No. 9005) are pretty well buried in it. The left upper second and 

 third molars are here figured (pi. 6, figs. 7, 8) and the lower left 

 second and third molars (same plate, figs. 3, 4) . The latter came from 

 Afton, Oklahoma, and are described below. 



The upper teeth evidently belonged to a young but mature animal, 

 and they are very little worn. The premolar resembles rather closely 

 that of Alces americanus. Its length is 24 mm.; its width, 25 mm. 



MEASUREMENTS OF UPPER MOLARS IN MILLIMETERS. 



The writer lias described ^ the teeth of the type of Cervalces scotti. 

 It will be seen that the teeth of the Alton collection are somewhat 

 larger; especially they are relatively broader, but this may not be 

 decisive. The teeth in hand differ from those of the existing moose 

 as there indicated. The mesostyle of Cervalces is more prominent 

 and has an excavation in front of it, especially deep in m^ Also the 

 style on the face of the anterior lobe is much more strongly de- 

 veloped, increasing in thickness to the cingulum; whereas in Alces 

 it subsides before reaching the base of the crown. The lower jaw has 

 a depth of 58 mm. at the second molar. The length of the fourth 

 premolar and the three molars taken together is 122 mm. ; that of the 

 three molars, 95 mm. These dimensions are somewhat greater than in 

 the type of C. scotti These teeth are considerably worn and are 

 badly hidden by the hard mass of loess, so that the individual dimen- 

 sions, especially the thickness, can not be accurately determined. The 

 outer faces are mostly hiddefn. The fourth premolar is 27 mm. long 

 and apparently 17 mm. thick. The first molar is 25 mm. long; the 

 second close to 30 mm. ; the third between 37 and 40 mm. All these 

 lower teeth resemble closely those of Alces atnericanus, but the style 

 on the inner face of the front lobe appears to be somewhat more 

 sharply defined than in Alces, and at the base of the tooth comes out 

 even with the plane of its inner face. 



'Thirty-sixth Ann. Report Geol. Surv. Ind., p. 626. 



