ARTERIAL SYSTEM 



417 



The aorta is continued posteriorly into the caudal artery, which 

 usually lies within a ccelomic canal enclosed by the ventral arches 



Kit!!,, art. 



E.'t. car. . 

 Car. lab 



-4,-f. n.r/iff:. __ 

 E.ct. manil. 



Ling. 



X" 



, Plt"i: 



K.I I. ,}-,'ii. 

 Int. j)<i/. 

 Cut. parr. 



Epifi. 



Ab<l. uiiiii. 



Cut. nian. 



FIG. 322. DIAGRAM OF THE CHIEF ARTERIES (red) AND CERTAIN OK THK VKIXS 

 (blue) OF A URODELE. From the ventral side (modified from Bethge's figures 

 of the A'essels in Salamandra mnrnlosa and Triton t>.fniatu\. 



of the vertebra? ; the degree of its development is naturally in 

 correspondence with the size of the tail. In cases where the 

 latter is rudimentary, as in Anthropoids and Man for instance, the 



E E 



