66 THE UNIVERSITY SCIENCE BULLETIN. 



character of the individual. The edges are roughened for mus- 

 cular attachment and the sides are smooth. The zygapophyses 

 are rounded and saddle-shaped. 



Measurements of Cervical Vertebrse. 



(No. 441, University of Kansas Museum of Natural History.) 



Length of most anterior vertebra preserved 20 mm. 



Width of most anterior vertebra preserved 28 mm. 



Height of most anterior vertebra preserved 17 mm. 



Median width of neural canal 5 mm. 



Length of the most posterior vertebra preserved 45 mm. 



Width of same 70 mm. 



Height of same 43 mm. 



Measurements of Neural Spine. 



(Possibly associated with the cervical vertebrae.) 



Height of single spine preserved 85 mm. 



Dorsal width 30 mm. 



Ventral width 36 mm. 



Among the material brought in by Mr. Boyce there was a 

 string of eighteen caudal vertebrae which are possibly to be asso- 

 ciated in this species. We will at least place them there provi- 

 sionally until such a time as further information will permit their 

 exact identification. They consist of four pygals and fourteen 

 caudals. The pygals differ in form from the most posterior cau- 

 dals, but have essentially the structure exhibited by the cervicals, 

 i. e., short, heavy, depressed, with lateral rib articulations. The 

 most anterior pygal differs from the cervicals in being shorter, 

 with the neurocentral articular surfaces wider apart, and the rib 

 articular surfaces larger, the reduction in size of the nutrient 

 foramina and the more marked amphiccelous character of the 

 centra. This will sufficiently characterize the pygals. The cau- 

 dals differ from the pygals in a further reduction along these same 

 lines. 



Measurements of the Pygals and Caudals. 



Length of most anterior pygal 31 mm« 



Width of same 60 mm. 



Height of same 36 mm. 



Diameter of neural canal 15 mm. 



Length of rib articular surfaces 20 mm. 



Width of rib articular surfaces 18 mm. 



Length of most posterior caudal 23 mm. 



Width of same 54 mm. 



Height of same 38 mm. 



Diameter of neural canal 9 mm. 



