Length of ceutrum of < 



474 THE WASATCH FAUNA. 



III. — Liimbara and sacrum. 



M. 



' first lumbar 020 



fourth lumbar 024 



sixth lumbar 025 



^ seventh lumbar 019 



Diameters centrum sixth, in front, } '., 



( transverse 014 



Depth centrum seventh, posteriorly 0135 



Total elevation of fourth lumbar 001 



Elevation of neural spine of fourth lumbar from base 024 



Length of sacrum - - 062 



Diameters distal end sacral centrum J „,,'' 



( transverse Oil 



IV. — Caudals. 



vertical 010 



Diameters first caudal^ (transverse 009 



C posteriori 

 ( antei^oposti 



I posterior { 

 1^ < 



( antei;oposterior 017 



vertical 008 



Diameters third caudal^' c transverse 010 



( anteroposterior 014 



Expanse of postzygapophyses do 012 



(posteriorly^ ^^^"•'^l °0^ 



Diameters sixth or seventh centrum^ < transverse 008 



( anteroposterior 018 



^ anterior j^''^""'^! 0085 



Diameter centrum with two equal diapophyses^ ' transverse 008 



( anteroposterior 020 



Length centrum without neural arch 022 



Length of a distal centrum 019 



y.— Totals. 



Length of cervical series 101 



Length of dorsal series 236 



Length of lumbar series 159 



Bibs. — These are flattened proximally, but cylindi-ic for the greater part 

 of the length. They are flattened again distally. The head is round and 

 the tubercle oval, and looking forward, as well as upwards. 



Sternum. — The prBesternum is elongate, and the elongation is posterior 

 to the articulation for the first pair of ribs, which is half as long again as the 

 portion anterior to that articulation. At the articulation the posterior por- 

 tion is depressed so as to be wider than deep. The posterior extremity is sub- 

 equally quadrate. The costal articular facets are pedunculate and directed 

 posteriorly. The anterior margins of the peduncles extend half way to the 

 extremity, which is narrowly compressed. The inferior keel of this portion 

 is not deep, and disappears posteriorly on the depressed base of the posterior 



