262 



MR. F. E. BEDDARD ON THE ANATOMY 



[June 6, 



patch of the gland on the dorsal side of the pyloric angle from 

 which the splenic limb arises, and which is continuous beneath 

 the end of the stomach with the main body of the pancreas. 

 In Lacerta ocellata the splenic limb arises from the main lobe of 

 the pancreas further towards the gall-bladder. In these points the 



Text-fiff. 36. 



Pancreas of Lacerta ocellata (left-hand figure) and of Gerrhosaurus 

 flavigiilaris (right-hand figure). 



P. Pancreas ; py. Commencement of intestine ; spl. Spleen ; St. Stomach. 



pancreas of Gerrhosaurus agrees with that of the Skinks, in which, 

 however, there is a tendency towards an enlargement of the dorsal 

 lobe of the pancreas and a disappearance of the splenic lobe. I 

 could not detect the latter in Macroscincus, and it was very thin 

 in Tiliqua. 



Arterial System. 



As one of the two specimens of Gerrliosarirus flavigidans which 

 I have dissected was successfully injected, I am able to g\Y& some 

 account of the arterial system, dealing particulai'ly with those 

 points which vary among the families of Lacertilia. The heart 

 has the usvial, but not universal, tag tying the apex of the ventricle 

 to the pericardium. The pericardium extends forward beyond the 

 ti-ifurcation of the arteria innominata. 



A pair of arteries exist of very fair size, running one on each 

 side of the trachea in the position occupied by the carotids in 

 many Vertebi-ates, and they are like them quite close to the 

 trachea. These arteries have, however, nothing whatever to do 

 with the carotids. They are bi'anches of the pulmonary arteries 

 (P, text-fig. 37), and the existence of these arteries in what 

 appears to be an unexpected place is possibly indicative of a 

 former forward extension of lung-tissue. 



The branches of the carotid arch diffei' slightly from those of 



