No. 2328. PLEISTOCENE VERTEBRATES IN UNITED STATES— HAY. 117 



mm. The vertical diameter is 29 mm.; the transverse, 23 mm. 

 There are, besides, a fragment of another incisor and a single enamel 

 plate of a molar. 



GEOMYS BURSARIUS (Shaw). 



In the collection there are over 60 nodules which contain remains 

 of this species of Geomys; besides which there are various detached 

 incisors. In most cases little more than teeth are to be seen. In a 

 few of the nodules, however, there are exposed considerable parts 

 of the skull, so that most of the characters can be determined. Most 

 of the specimens have incisors which are broader than those of the 

 average individuals represented in the United States National Mu- 

 seum; but in the collection mentioned there are a few which have 

 equally large teeth. In two of the skulls from about Alton the upper 

 incisors show a faint gi'oove near the outer border. This has been 

 observed by the writer in several recent skulls. 



URSUS AMERICANUS Pallas. 



A right ramus of the lower jaw, with well-preserved third and 

 fourth premolars and the two molars, together with the canine lack- 

 ing the tip, is not distinguishable from these parts of the existing 

 bear, U. americanus. The United States National Museum catalogue 

 number is 9097. 



5. COLLECTION FROM NEAR AFTON, OKLAHOMA. 



In 1903 1 Prof. W. II. Holmes reported on The flint implements and 

 fossil remains from a Sulphur Spring at Afton, Indian Territory. 

 The importance of this spring, which is situated between Afton and 

 Miami, was first noted by Dr. E. H. Harper, of Afton, who, about 

 the year 1900, discovered in it remains of mastodons and elephants 

 in close association with flint implements. Excavations were under- 

 taken there by Professor Holmes, and his eflorts were rewarded by 

 the finding of some hundreds of weapons and implements of flint and 

 bone, and the teeth and bones of many mammalian animals. These 

 bones and teeth are novv^ preserved, partly in the department of 

 paleontology, partly in that of anthropology, in the United States 

 National Museum. In the report referred to the animals mentioned 

 are two species of elephants, buffalo, deer, elk, and horses, domestic 

 and extinct. 



By far the greater part of the bones and teeth, as well as tha 

 artifacts, were found within a few feet of the funnel of the spring 

 and between depths of 2 and 7 feet. At the surface was muck to a 

 depth of 2 or 3 feet, but thinning out away from the spring. Below 

 was a bed of fine sand, not local but extending out on all sides as il 

 deposited by water. Downward, this bed becomes more gravelly 



'Rep. U. S. Nat. Mus. for 1901, pp. 237-252, pis. 1-26. 



