CIRCULATION IN REPTILES. 
245 
Arches of aorta 
Left auricle v 
Super, vena cava 
Ventral aorta- 
Pulmonary artery_ 
Inferior vena cava 
Carotid artery 
/ 
* / Arches of Aorta 
s' 
/ Right Auricle 
Ventricle 
^ Pulmonary vein 
___. Brachial artery 
Pulmonary artery 
Liver and hepatic 
vein 
Kidneys-, 
Ventral Aorta 
*.at 
Gastric vein 
Fig. 134.— Circulating Apparatus op Lizard. 
286. In the class of Fishes, the circulating apparatus is 
still more simple. The heart only possesses two cavities, an 
