No. 2328. PLEISTOCENE VERTEBRATES IN UNITED STATES— HAY. 91 



To these teeth are given the catalogue number 8953. The most 

 striking character of some of the teeth is the small size as compared 

 with those of most specimens of 0. virginianus. A. lower last molar 

 is hardly 18 mm. long; a lower first molar, 13 mm. long. The 

 upper molars are furnished with a well-developed tubercle at the 

 mouth of the inner valley; the lower ones each with a tubercle at 

 the mouth of the outer valley. 



SANGAMONA, new genus. 



Type species. — Sangamona fugitiva., new species. 



Type locality. — Eastern Tennessee. 



Type formation. — Pleistocene. 



Diagnosis. — Upper molars of medium height, broad. Outer face 

 of anterior lobe with a feebly developed style; the outer face of 

 the hinder lobe deeply concave and devoid of style. Lower molars 

 relatively broad ; inner faces of front and hinder lobes flat and with 

 feebly developed styles. 



This genus differs much from our other deer in the nearly com- 

 plete absence of the strong ribs which occupy the outer faces of the 

 lobes of the upper molars. If, as is supposed, the lower molars found 

 in the loess at Alton, Illinois, belong to the same genus, the lower 

 molars also differ from those of our other deer in having the styles 

 on the inner faces of the lobes feebly developed. The teeth resem- 

 bling most those here described are found in Dama dama; but 

 here too, the style of the upper front lobe is stronger, and the outer 

 face of the hinder lobe is not so deeply excavated; while the lower 

 styles are well expressed. 



The generic name is given in allusion to the Sangamon stage of the 

 Pleistocene, during which this large deer is supposed to have lived. 



SANGAMONA FUGITIVA, new species. 



Plate 3, figs. 14-15. 



Type specimen. — An upper left second molar (Cat. No. 8954, 

 U.S'.N.M.) 



Type locality. — Whitesburg, Hamblen county, Tennessee. 



Type formation. — Pleistocene. 



Diagnosis. — Styles, or ribs, on paracone and metacone absent or 

 obsolete. Size intermediate between the Virginian deer and the 

 wapiti. 



This supposed new species is based primarily on a single upper 

 cheek tooth, taken to be a second true molar of the left side (pi. 3, 

 figs. 14, 15). It is worn down moderately. The greatest length at 

 the outer border of the crown is 20 mm., at the base 16 mm. ; width 

 at the base of the front lobe, 22 mm. ; at the base of the hinder lobe, 



