204 The Alligator and Its Allies 



of the right subclavian will also be described in 

 connection with the arterial system. 



The auricles are very large in proportion to the 



Fig. 59. The veins of the posterior region of the Florida 

 alHgator. The postcaval system and its associated veins are 

 shown in the main figure; the hepatic portal system is shown in 

 the smaller figure to the left. — For lettering, see pages 224-25. 



ventricles, though their relative sizes will, of course, 

 vary with the amount of contained blood. 



The Venous System 



The Posterior Vena Cava and its Branches. The 

 postcava, Fig. 59, pc, as noted above, is a wide, 



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