342 



FAUNA ANTIQUA SIVALENSIS. 



of the ' Renard tricolor,' C. cinereo-argenteus, Linn. It will be 

 observed from the table of measurements that the length occupied by 

 the molars and canine teeth together is less in the ibssil, while that 

 occupied by the molars alone is proportionally greater. This diiference 

 is only apparent, and is caused by the advanced position of the first 

 false molar close to the root of the canine ; the tooth is probably a 

 deciduous one, not yet replaced by the permanent molar ; the unworn 

 state of the other teeth also attesting the youth of the fossil, at the 

 period of its demise. The lower jaws, figs, 11 and 12, are not suiE- 

 ciently perfect to afford any satisfactory measurements. 



To the foregoing observaticns we have nothing further to add than 

 that, in our opinion, they point out sufficient proof of specific differ- 

 ences between the several objects compared ; but, for the reasons before 

 adduced, we must limit our conclusions to this, and cannot therefore 

 venture upon giving new names to our fossil species. 



Measurements of Fossil Skulls. 



Details of Measurements 



Extreme length from post, of occipital condyles to ante- 

 rior of incisor teeth ...... 



Ditto ditto ditto canine ditto .... 



Breadth measured across mastoid processes . 



Greatest breadth of cranium opposite mastoid processes 



Least ditto ditto at temporal fossfe 



Height of occiput from lower margin of occipital foramen 

 to top of transverse ridge • ♦ . 



Breadth from point to point of styloid processes . 



Ditto across the occipital condyles 



Ditto of frontal from point of post-orbital apophyses 



Greatest breadth across zygomatic arches 



Breadth measured externally across superior canine teeth 



Ditto ditto most prominent points of line of molars 



Perpendicular diameter of occipital foramen . 



Horizontal ditto ditto ...... 



Length from exterior of incisors to anterior of palatal sinus 



Ditto from anterior of palatal sinus to lower margin of 

 occipital foramen ....... 



Ditto occupied by molars and canine teeth, taken together 



Ditto ditto molars alone ..... 



Diameter of orbit perpendicular, but measured in plane 

 of orbit's margin ...... 



Ditto ditto from point of post-orbital apophysis to anterior 

 margin of orbit ...... 



Greatest antero-posterior diameter of canine tooth 



"Width of tuberculous tooth (in Felis and Gulo) 



Lower Jaw 

 Length from posterior of condyle to anterior of canine 

 Ditto from ditto ditto to posterior of molars . 

 Ditto occupied by molars and canine teeth, taken together 

 Ditto ditto molars alone . . . 

 Depth of lower jaw taken in front of carnivorous tooth 

 Greatest antero-posterior diameter of canine tooth . 



