VASCULAR SYSTEM OF LACERTILIA. 



481 



1905.] 



of the stomach , to which it is attached . This disposition is possibly 

 due to the absence of a left lung and its accompanying pulmo- 

 hepatic ligament, which in forms where it does occur comes into 

 relation with the right hepato-gastric ligament. At a distance 

 of rather more than 40 mm, from the anterior end of the liver 

 the two dorsal hepatic ligaments unite to form a single membrane, 

 which extends forward for the remainder of the course of the 

 liver. It is at least common, if not the rule, among the Lacer- 

 tilia, for these two membranes to unite anteriorly. So that the 

 conditions obtaining in Amphisbcena are merely an exaggeration 

 of those to be seen elsewhere, and due to the elongation of the 

 liver. I shall recur to this anatomical relationship of the mem- 

 branes in considering the blood-vessels Avhich I'un in them. 



Text-fig. 66. 



^ 



Membranes uniting vena cava and left lung in Am/pJiisbcena hrasiliana. 

 a. Umbilical ligament ; h. Pulmo-hepatic ligament ; Lu, Lung ; v.c. Vena cava. 



The liver is also attached to adjacent viscera by a lateral 

 mesentery upon the left side of the body, and uniting the liver with 



