478 MR. F. E. BEDDARD ON THE [NoV. 28, 



parietes in line with the afferent renal veins that have just been 

 described, and an inner series emerging from the body- wail close 

 to the median dorsal line. Of the latter I observed only one 

 vessel on each side of the body. Of the former there were two 

 on the left side and one on the right. They collected blood, how- 

 ever, from more than one intercostal space. On the left side a 

 blood-vessel belonging to the same series runs from the parietes 

 to the sperm-duct some way behind the testis and supra-renal. 

 I did not observe one of these vessels on the right side. 



Resiijine. 



It may be useful to state briefly the main facts in the circulatory 

 system of this Lizard for purposes of an easier comparison with 

 other forms. 



Arterial System. 



(1) The origin of the carotids from the carotid arch suggests 

 the carotid " gland " of the Frog, inasmuch as the carotid trunk 

 arises by several moviths from the carotid arch as it bends round 

 to join the systemic arch. 



(2) As in some other Lizards, the pulmonary artery gives off 

 a branch running along the trachea and supplying the thyi'oid 

 body. This exists only on the right side. The artei-y is relatively 

 small. 



(3) The suhclavians are two slender vessels arising by a 

 common trunk fi'om the right aorta and give off two vertebrals, 

 one arising from each. 



(4) The intercostals are quite regularly paired^ and nowhere 

 deficient or asymmeti-ical. They commence upon the right aorta 

 before it joins the left. 



(5) The left aorta gives off several oesophageal branches. 



(6) There are seven oesophageal arteries arising from the common 

 aorta, of which the last three arise from the intercostal of the 

 left side. 



(7) There are five gastric arteries anterior to the coeliac. 



(8) The liver is supplied with arterial blood from tivo sources. 

 First by the usual Lacertilian hepatic artery, which is a branch of 

 the coeliac ; and secondly by a number of small trunks accomjmnying 

 the gastro-hepatic vessels and arising from the gastric arteries. 



(9) The relative positions of the coeliac, superior mesenteric, 

 and csecal arteries (as has been shown by Rathke and Hochstetter) 

 differ. 



(10) The renal arteries are six or seven in number, arising in 

 common loith the intercostals and nearly regidarly paired. The 

 iliac arteries also give off a branch to the kidneys. 



Venous System. 

 (1) The anterior vena cava of the right side receives a branch 



