362 



ZOOLOGY. 



Fig. 363. Anatomy of the Coluber (Common Snake) .* 



* I, tongue and glottis; oe, gullet, cut across at OB to show the heart, 

 &c., in aitu; i, the stomach; i', the intestine; cl, cloaca; an, anus;./, the 

 liver; o, the ovarium; o', the ova or eggs; t, windpipe; p, principal lung, 

 p' t little lung ; vt, ventricle ; c, left auricle ; <?', right auricle ; a, left aorta ; 

 ad, Tight aorta ; a', ventral aorta ; ac, carotid arteries ; v, superior cava ; 

 vc, inferior cava ; vp, pulmonary vein. 



