958 THE JOHN DAY FAUNA. 



M. 



Width of zygomata at anterior border of orbits 080 



Width at meatus auditorius 130 



Width between paroccipital processes 053 



Width of occiput at middle 032 



Elevation of occiput above foramen 03"2 



Width of foramen magnum 02'2 



Depth of foramen maguum 014 



Width between etic bull» 016 



Width of posterior nares 013 



Width of chin at base 020 



Width of chin at summit 027 



Length of superior canine 026 



Anteroposterior diameter at base 013 



Anteroposterior diameter at middle 010 



Transverse diameter at middle 0065 



Length of superior molar series 057 



Length of bases of Pm. i and ii 0105 



Length of base Pm. iii 018 



Elevation of crown of Pm. iii 010 



Length of base of Pm. iv 024 



Width of base in front 010 



Elevation of base in front 012 



AVidth of M. i (transverse) Oil 



Length of base of inferior Pm. iii 014 



Length of base of inferior Pm. iv 015 



Elevation of base of inferior Pni. iii Oil • 



The atlas attached to the cranium above described is not entirely 

 cleaned from the matrix. It displays a vertebrarterial foramen piercing- the 

 base of the transverse process posteriorly, as in various species of Felis and 

 Uncia, and as distinguished from the lion. The base of the transverse 

 process has a smaller anteroposterior width than in any of the species of 

 Felidce or Hj-aenas accessible to me. The neural arch has a similar char- 

 acter; a low tuberosit}' represents its neural spine. 



The second specimen mentioned resembles the one already described so 

 nearl}' as to render extended notice unnecessary. The crowns of the small 

 first premolars have been broken off, but traces of their roots remain. 



The third specimen displays the root of the first premolar with the 

 others. The palatal surface exhibits a fossa opjjosite the heel of the superior 

 sectorial to receive the apex of the inferior flesh-tooth. A last or seventh 

 lumbar vertebra, belonging to this specimen, is represented on Plate 

 LXXla, fig. 8. It is a little smaller than that of Uncia concolor, and is quite 

 similar in general proportions, especially in the form of the centrum. It 

 differs in the following points: (1) The expanse of the postzygapophyses 



