1905. ] VASCULAR SYSTEM OF LACERTILIA. 473 
by its straight as opposed to their highly sinuous course. This 
applies also to the affluents of the portal, which, so far as concerns 
the small intestine, are five in number, 
Text-fig. 63. 
Ao 
Lé 
AR 
— 
AR 
Renal arteries of Ophisaurus. 
Ao, Aorta; A.R. First and last renal arteries ; ep. Epigastric; Ic. Intercostal. 
The gastric affluents of the portal trunk arise from both sides 
of the stomach, On the right side is a vein which runs forward 
along the stomach to nearly its anterior end, but stops a little 
before a region of the stomach the veins of which instead of 
joining the main portal system open independently into the liver ; 
the arrangement of these veins will be considered presently, At 
29% 
OL 
