272 COMPARATIVE ZOOLOGY OF CHORDATES 



it there pass the arteries from the dorsal aorta to the gut. The 

 gut and liver are connected by the lesser omentum, through 

 which the bile-duct runs from the liver to the anterior portion 

 of the intestine. The lungs in amphibia are of course covered 



Fig. 125. — Transverse section through the trunk of an embryo of Lacerta, 

 showing the relations of the coelom. 



da, dorsal aorta ; dm, dorsal mesentery ; fl, 

 I, liver ; In, lung ; lo, lesser omentum ; n t 

 phi, pulmo-hepatic ligament ; phr, pulmo- 



am, accessory mesentery ; 

 falciform ligament ; g, gut ; 

 notochord ; nc, nerve-cord ; 

 hepatic recess. 



over by coelomic epithelium (pleura) which is continuous with 

 the ordinary lining of the perivisceral cavity round the stalk of 

 the lungs. In some reptiles, the coelomic epithelium covering 

 the lung is also attached to the roof of the perivisceral cavity 

 forming the accessory mesentery, and attached to the liver 



