Diameter ball of do., 



Cope.] 44Z [May 3, 



oa both the anterior and posterior borders for adjacent diapophyses. The 

 posterior are larger, and are transverse oval. The postzygapophyses arc 

 prominent, bvit narrow ; the prezygapophyses have a vertical external 

 face and concave internal face ; the superior border is not rolled in as in 

 Booidea. No hypapophysis. The anterior two elements of the sacrum 

 are preserved, the rest having been lost. They are thoroughly co- 

 ossified, and the intervertebral foramina are large. The prezygapophyses 

 are like those of the last lumbar. The iliac surface only extends on two 

 centra. 



A comparison of the dorsal vertebrae with those of the horse shows that 

 those of this species are more tapiroid in the general isolation of the 

 spinous foramina in the anterior part of the column. 



Measurements. 



M. 



Elevation of axis at middle 055 



'•■ of spine of do., from roof of arch behind 015 



" of neural canal of do., behind 014 



Length of spine on side 049 



Width of cup of axis 021 



Length of centrum last cervical 045 



vertical 018 



horizontal , 014 



Expanse of postzygapophyses do 041 



Elevation of neural spine from canal .024 



r fore and aft 024 



Diameters centrum anterior dorsal \ , . ( vertical 016 



; anterior < , „^,, 



(^ (transverse... .024 



Length of neural spine from canal in front 065 



Length centrum of a posterior dorsal 028 



Width anteriorly without costal faces 018 



Depth " " " " 017 



Length of neural spine from canal anteriorly 107 



Hong 030 



Diameters last lumbar ■< . , c vertical 015 



( ^(transverse 023 



Anteroposterior width of diapophysis of do 035 



Total expanse of sacrum in front 098 



Depth of centrum of do., anteriorly 013 



Width of neural canal in front 020 



Anterior limb. — About the distal half of the humerus is preserved. Its 

 form is much like that of the horse, the inner side being flat, and the outer 

 concave at the position occupied by the epicondyle when present. The 

 external supracondylar ridge is distinct but not prominent. The troch- 

 lear crest has the same position as in the horse, and is rather more 

 prominent. The condylar surface exterior to it is not cut otF above and 



