R. 8. Lull — Fauna of the Dallas Sand Pits. 1Y3 



Length over zygapophyses . . 175 0.91 160 

 Height, prezygapophyses to 



inf. transverse processes . . 121* 1.43 176 



Height over all 170* 1.35 230t 



Average ratio 1.18 



No. 1.60, S. M. U. 

 Dorsal I : mm. mm. 



Length of centrum 92 0.86 79 



Post, depth of centrum 54 0.94 52 



Post, width 80 1.05 84 



Width over all 120 1.08 130 



Average ratio . , . 0.98 



* Not completely ossified, 

 t Estimated. 



Ulno-radius. — There is an admirably preserved right 

 Tilno-radius, No. 1.58, S. M. U., which compares closely 

 with that of the dromedary (No. 01552, Y. P. M.). The 

 ulna shows the same degree of reduction, but the bone as a 

 whole is slightly shorter, wider, and flatter at mid-length, . 

 and shows a less degree of curvature. 



Measurements. 



Camelops 

 Camellia Jiuerfanensis 



arabicus dallasi 



No. 01552 No. 1.58 



Y. P. M. Eatio S. M. U. 



mm. mm. 



Length over all 555 0.99 550 



Length of radius 490 0.98 480 



Width, mid-shaft 57 1.18 67 



Thickness, mid-shaft 41.5 0.94 39 



Width, prox. end 95 0.98 93* 



Width, dist. end 94.5 0.95 90 



Average ratio 1.00 



* Abraded. 



Metatarsal. — A right metatarsal, No. 1.56, S. M. U., 

 agreeing approximately in size with that of the drome- 

 dary (No. 01552), is present. It is not preserved through- 

 out its entire length, having lost the distal end, but gives 

 the impression of greater relative weight than in the 

 recent form, and the longitudinal ridges on the posterior 

 aspect are more nearly equal in prominence. It also 

 seems somewhat straighter when seen in profile. 



