9 



are present in this one, but differ in proportions, owing to the greater size 

 and expanse of the superior parts of the neural arch. The fossa posterior 

 to the base of the diapophysis is nearly plane, while that at the anterior 

 base is deeply excavated, is narrower, and extends so far along the inferior 

 side of the process as to give it a semi-circular section near the middle. 

 Distally the diapophysis has a trialate section owing to its three longi- 

 tudinal ridges, and the articular extremity is large and antero-posterior in 

 direction. The process differs from that of the vertebra already described, 

 in the possession of a facet near the middle of its anterior inferior bounding 

 ridge, which is probably costal, as in the vertebrae of Crocodilia. The 

 lateral foramen of the centrum is subround. The general surface is smooth. 



Measurements. M. 



Total elevation of vertebra 770 



Total transverse extent of diapophyses 1.010 



C longitudinal 300 



Diameter of centrum J vertical of cup 250 



J transverse " 340 



I " at middle 205 



Elevation of zygapophyses above centrum 310 



t.. . c , . (transverse - 170 



Diameter of zygapophysis \ 



\ antero-posterior 090 



Width of neural canal 085 



Transverse extent of neural spine 440 



Length of diapophysis from posterior zygapophysis 320 



Antero-posterior width of end of diapophysis 135 



| fore and aft 170 



Diameter of centrum of anterior caudal i vertical 245 



(. transverse 245 



Total elevation of do 545 



Elevation of neural canal 040 



Antero-posterior width of neural spine 075 



{fore and aft 180 

 vertical 200 

 transverse 192 



(fore and aft . . 155 

 vertical 175 

 transverse 145 



Besides the characters above-mentioned under the head of the genus, 

 in which the vertebrae of this species differ from those found by Professor 

 Lakes, I may add that they also differ in general proportion. Those of the 

 Oamnrasaurus, are relatively shorter and wider, and more depressed, with 

 deeper cup, and less elongate lateral foramen or fossa. The proportions 

 of the caudals differ totally. The dorsal vertebrae are larger than those 

 of the Golden City saurian. 



What the total dimensions of this saurian are, is not readily estimated 



