REVISION OF THE AMERICAN RED FOXES 673 



more slender; 2d lower molar broader and more bellied on inner 

 side. 



On account of the great disparity in size, skulls of V. regalis re- 

 quire no comparison with those of the same sex of the fulvus group ; 

 but females of regalis agree so closely in size with males ai fulvus that 

 care is necessary to distinguish them. V. regalis may be known by 

 the size of the bullae, which are larger, and the form of the postglenoid 

 process, which is much broader at base, shorter, and less vertical. 



Measurements. — Type specimen ( ^ ad.) : total length, in flesh, 

 1117; tail vertebra from well made dry skin 420; hind foot in dry 

 skin 170 ; ear from anterior base in dry skin 98. An adult 9 from Car- 

 berry, Manitoba, measured in flesh: total length 1050; tail 392; hind 

 foot (dry) 157. 



