No. 2891. DESCRIPTIONS OF PLEISTOCENE VERTEBRATA—HAY. 617 



this species and others there is an infold of the enamel on the inner 

 part of the front face of the premolar, or a deep notch between the 

 cusps. Nothing of this is seen in the fossil. The teeth have suf- 

 fered but little wear, and yet a very little more would have produced 

 one straight loop of enamel across the front of the grinding surface 

 of the anterior premolar. 



The length of the tooth row is 10 mm. The distance from the 

 mental foramen to the rear of the condyle is 22 mm. The height of 

 the ramus at the second molar is 6.5 mm. 



5. COLLECTION OF FOSSIL MAMMALS MADE AT ANITA, COCONINO 

 COUNTY, ARIZONA. 



From Mr. Barnum Brown, of the American Museum of Natural 

 History, New York City, the writer has received a small collection of 

 fossil mammals which had been made at Anita, Arizona. The greater 

 part of these specimens had been secured by Mr. B. C. Bicknell in 

 1901 ; another part was collected by Mr. Brown himself in 1904. The 

 portion gathered by Mr. Bicknell was the property of the Arizona 

 School of Mines, at Tucson, and had been sent for examination in 

 1904 to Mr. Brown by the director, Dr. W. P. Blake. Other pressing 

 duties prevented Mr. Brown from completing his studies of these 

 remains. From Mr. Brown's notes it appears that the fossils were 

 found at the Val Verde Copper Mines, at Anita, a station on the Grand 

 Canyon branch of the Santa Fe Railroad, 40 miles north of Williams 

 and 20 miles south of the Grand Canyon. The collecton has become 

 the property of the United States National Museum through exchange. 



The fossils were discovered in a fissure in a Carboniferous limestone. 

 This fissure was entered in the making of some prospect holes by the 

 workmen of the copper company. The bones appear to have been 

 buried in a deposit of sand about 7 or 8 feet thick, lying on the bottom 

 of the cave or fissure. They are in a fine state of preservation, but 

 are mostly pretty badly broken up. Mr. Brown's examination of the 

 collection resulted in the recognition of remains of horses, camels, 

 rabbits, woodchucks, packrats, pocket gophers, and squirrels. Being 

 engaged in other investigations he did not have the time to study the 

 remains and he generously put them into the hands of the writer. 

 Unfortunately other lines of work have prevented a consideration of 

 them until recently. Most of Mr. Brown's general determinations 

 have been confirmed. In addition, a few other forms have been 

 recognized, among them a hyaena-like animal. In case this deter- 

 mination shall be confirmed an important addition will have been 

 made to our extinct fauna. Cope believed that the genus Borophagus % 

 belonged to theHyaenidae,but it is now arranged among theCanidae. 



