IXTKODUCTION. 



XV 



which they walk are naked, but in digitigrade animals the correspond- 

 ing parts the metacarpus* of the fore limb, and the metatarsus of the 

 hind limb, which are raised above the ground, are hairy. 



Fig. 1. Fig. 2. 



Fig. 1. Under surface of right fore foot of Icticyon venaticus. (Natural size.) 

 Fig. 2. Under surface of right hind foot of same. (Natural size.) 



(After Flower.) 



The Skeleton. 



The bones which compose the vertebral column, spine or " back- 

 bone," consist of seven cervical vertebra (as in almost all mammals), 

 thirteen dorsal, seven lumbar (rarely six, as we have found in C.jubatus), 

 three or four sacral, and from eleven to twenty-two caudal vertebra?. 



* For an explanation of these terms the reader is referred to the Author's book on 

 ' The Cat,' pp. 98 and 115, and therein will be found full particulars as to the names of 

 the bones, parts of bones, muscles, and other organs and anatomical structures herein 

 referred to. Space cannot be afforded for such explanations in the present work. 



