AMATOMT OF THE UZARD. 



493 



Pig. 440.— Anatomy of a lizard, Sceleporus undulatus. t, trachea ; C, carotid artery;, 

 /ft, thyroid gland ; ft, ventricle of the heart — above are the two auricles; lUy lun^* 

 /, liver turned out ; «, Btomacb ; i, intestine ; a, vent — above it the cloaca is laid 

 ■open to disclose the openings (o o) of the kidneys (Al; above are the two openinsrs of 

 the oviducts ; re, oviduct ; 0, ovary ; », vena cava ; /, fat-body.— Drawn by A. F. 

 ■Gray from dissections made by the author. 



