54 THE SKELETON OF THE FROG 



/3. The distal row of tarsal bones consists of two very 

 small bones. 



d. The foot has five complete digits, and a supernumerary 

 toe as well. Each digit consists of a proximal meta- 

 tarsal bone, beyond which are a variable number of 

 phalanges. 



i. The hallux or preaxial digit, corresponding to the 

 great toe of man, is the smallest of the series. 

 It consists of a metatarsal and two phalanges. 

 On the inner side of the hallux is the calcar, 

 supposed to be an additional or supernumerary 

 toe : it may have one or two joints in addition to 

 a short metatarsal. 



ii. The second toe consist's of a metatarsal and two 

 phalanges. 



iii. The third consists of a metatarsal and three 

 phalanges. 



iv. The fourth, the longest of the five, consists of a 

 metatarsal and four phalanges. 



v. The postaxial digit, corresponding to the little toe 

 in man, consists of a metatarsal and three 

 phalanges. 



