No. 2391. DESCRIPTIONS OF PLEISTOCENE VERTEBRATA— HAY. 605 



is well preserved and is not essentially different from the correspond- 

 ing tooth from Denver here figured (pi. 116, fig. 6). The tooth and 

 the cannon bone are referred to Camelops Jiuerfanensis. 



From Christmas Lake there is present a first, apparently anterior, 

 phalangeal bone (Cat. No. 3821; pi. 123, fig. 2), which is to be com- 

 pared with that of Camelops Jiuerfanensis. 



Measurements of first phalanges of camels. 



Length on median plane 



Fore-and-aft width of upper end, at epiphysial suture 



Side-to-side width of upper articular surface 



Fore-and-aft diameter at middle of length 



Side-to-side width at middle of length 



Width of distal articular surface 



Greatest width of distal articular surface on lower side of the bone. 



It is probable that this bone belongs to Camelops Jiuerfanensis. 



In the United States National Museum there are some remains of a 

 camel which was found, associated with a horse, at Keams Canyon, 

 Arizona. The parts seen are the upper end of a tibia, the lower end 

 of the same tibia, the external malleolus, an astragalus, a calcaneum, 

 a navicular, and the proximal end of a cannon bone, all of the same 

 right limb. The total length of the calcaneum is 156 mm., being 

 close to that of Procamelus coconinensis from Anita, Arizona, 

 described on page 622. Instead, however, of finding an astragalus 

 nearly as large as that of P. major, figured by Leidy and Lucas (a 

 bone only slightly too large to fit the Anita calcaneum), one finds 

 that the bone from Keams Canyon is much smaller. On the inner 

 face the latter is 75 mm. long; that from Florida, 92 mm. The 

 Keams Canyon animal belongs possibly to Camelops Jiuerfanensis. 

 The bones agree in every way with corresponding bones from Denver, 

 Colorado, referred to C. Jiuerfanensis. 



It is interesting to find that remains of one or more very large 

 camels have been found at various places in the elevated regions of 

 the West. Matthew, in his list of vertebrates found at Christmas 

 Lake ("Silver Lake"), Oregon, and Washtucna Lake, in southwestern 

 Washington, 5 mentions "teeth, foot bones, etc., of f Camelops sp. 

 max." In the National Museum there are some bones that were 

 collected in 1882 at Christmas Lake by Dr. I. C. Russell, among 

 which are the head of a humerus, the distal half or more of a left 

 humerus, one of the distal divisions of a cannon bone, and a com- 

 plete first phalangeal. 



The head of humerus from Christmas Lake measures from front 

 to rear of the articular surface 93 mm.; in the dromedary this 



» Bull. Amer. Mus. Nat. Hist., vol. 16, pp. 320, 321. 



