12 



MR. F. E. BEDDARD ON THE 



[May 3, 



arises behind the superior and inferior mesenteries, and crosses 

 over them shortly after its origin. In two out of three specimens 

 the two mesenteries arose from the aorta by a common trunk ; in 

 the third they arose separately. The succeeding arteries I have 

 dissected only in one individvxal, where they were asymmetrical. 



Certain anterior arteries and veins of Cham(eleo)t vidgai'is. 



Ao., aorta cut short jvist after union of riglit and left aortic arches ; a, h, c, paired 

 intercostals ; Az., azygos vein; J., jugular; ce., oesophageal artery and vein ; 

 M.Scl., L.ScL, right and left subclavian arteries. 



On the right side there first arise two arteries for the ovary and 

 oviduct ; then comes the renal. On the left side the ovarian 

 artery is followed by another trunk which divides into renal and 

 ovarian, and which lies behind the i-enal of the right side. 



Pygopus lepidopus. 



I have examined only one example of this species, which was 

 not injected. The reptile, however, had died in very good con- 

 dition for my purposes, foi- the veins wei-e turgid with blood. 



