602 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59. 



It was found in a gravel pit at a depth of 9 feet. Figures are pre- 

 sented of this tooth (pi. 116, figs. 8,9). It is characterized by its thick- 

 ness, the strong development of the styles, the angulation of the 

 inner faces of the lobes, and the unequal slopes of the front and rear 

 portions of their faces. The crown is worn down to about one-half 

 of its original height; the length is 64 mm.; the width of the front 

 lobe, at the base, 28 mm. It can hardly belong to C. huerfanensis. 



A scapula from Denver is represented by about 150 mm. of the 

 base of that of the left side (Cat. No. 8228). The greater diameter of 

 the glenoid cavity is 77 mm. ; the shorter, 64 mm. The width of the 

 bone from its rear border to the front of the coracoid process is 

 118 mm. The bone differs from that of the dromedary in having 

 along the hinder border of the subscapular surface a prominent ridge. 

 This fades out as it approaches the glenoid fossa. 



The humerus is represented by the distal end of three bones — two 

 of the left limb, one of the right. One of those of the left side (Cat. 

 No. 8236) is large, measuring 91 mm. across the articular surface for 

 the forearm. In the specimen of dromedary at hand (Cat. No. 143158, 

 U. S. Nat. Mus.) this width is only 77 mm. The other fragment 

 (Cat. No. 8229) of a left humerus and the one of the right (Cat. 

 No. 8231) belonged probably to the same individual, and measure 

 across the articular surface 81 mm. The fossa for the olecranon is, 

 however, narrower (30 mm.) than in the dromedary (35 mm.). 



Of the ulno-radius there are present the proximal end of one of the 

 left side (Cat. No. 8233) and two distal ends of the left side. It is 

 probable that the proximal end belonged to the smaller individual, 

 that which possessed the distal end of the right humerus above 

 described. Judging from the color of the bones the writer concludes 

 that one (Cat. No. 8227) of the distal ends was a part of the same 

 bone as the fragment (Cat. No. 8233) just described. The surface 

 which articulated with the wrist bones is 81 mm. wide; in the drome- 

 dary it is 78 mm. wide. The other distal end of a forearm bone 

 (Cat. No. 8232) has the same size as the one just mentioned. It is 

 of a lighter color. The browner bone has been much gnawed by some 

 broad-toothed rodent, probably a porcupine. The bone last men- 

 tioned brings with it all of the carpals except the pisiform. Those of 

 the upper row have a height of about 37 mm. ; those of the lower row, 

 of about 22 mm. These carpals are followed by about 100 mm. of 

 the anterior cannon bone. This has a width, across the proximal 

 articular surface, of 78 mm. There is, besides, a second proximal end 

 of a cannon bone (Cat. No. 8234) of the same size. The corresponding 

 surface of the dromedary measures only 68 mm. from side to side. 

 It is evident, too, that the shaft of this bone in the fossil had a con- 

 siderably greater diameter than that of the dromedary, although the 

 bones higher up in the leg were not greatly larger. The larger frag- 



