CANIS ZERDA. 151 



Cranial and Dental Characters. 



The most remarkable character of the skull of the Fennec is the 

 very large size of the auditory bullae and of the external opening of 

 the meatus auditorius externus. 



The proportion borne by the length of the fourth upper premolar to 

 the length of the two upper molars taken together may be as 100 to 

 116, or as 100 to 125. 



Dimensions of a small specimen. 



Centimeters. 



Length of cervical vertebrie 7 '2 



dorsal 11*3 



lumbar 9'0 



sacral 1*6 



caudal 35*0 



Length from front of atlas to hinder end of sacrum . . 29' 1 



Length of pectoral limb 23'0 



pelvic limb 27'2 



humerus 8'0 



radius 7'9 



femur 8'1 



tibia 9'8 



index metacarpal 2'4 



third . 2'8 



metacarpal of pollex 0'9 



whole pollex 1*9 



last phalanx of third digit (manus) .... 0'75 



index metatarsal 3*9 



metatarsal of hallux 0*4 



whole hallux 0*7 



last phalanx of third digit (pes) ..... 0*75 



Dimensions of the Skull of the individual figured. 



Basion to ovalion 1'8 



sphenoideum 2'5 



Sphenoideum to gnathion .* ,*j'* 5 '8 



Length of palate 4*5 



Breadth 2'4 



