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Show 1 9 0 5 .] ON THE BRAIN OF LIZARDS. 2 6 7 lias already been noted. The epigastric springs from the anterior abdominal some way behind the liver (text-fig. 34, Ep., p. 259), and running along the umbilical ligament disappears in the substance of the liver some way behind the anterior end. It is reinforced by the usual branches from the median ventral parietes. These vary in number in what appears to me to be a remarkable way. In one specimen repeated examination has only enabled me to ascertain the presence of a single ventral parieto-liepalic vessel, which joins the epigastric at about the middle of the liver. In a second specimen, on the other hand, there were four of these ventral parieto-hepatic vessels (cf. text-figs. 33 and 34, p. 259). I am disposed to think that the fluctuation in number of these blood-vessels is related to fluctuation in the number and size of the dorsal parieto-hepatic veins. These differed in the two specimens which I have dissected, though not quite to so great an extent as the ventral parieto-hepatic veins. In the specimen with but one ventral parieto-hepatic vein, the dorsal parieto-hepatic veins were as follows:-a large vein accompanies the anterior edge of a fold of membrane which in this, as in many lizards, runs obliquely and binds the end of the right lobe of the liver to the parietes. This vein runs superficially for a short distance anteriorly alongside the aorta on the light side, and is clearly a fragment of the right posterior cardinal. It reaches the parietes on a level with and outside of one intercostal artery and disappears from view to the inside of the next intercostal artery in front; it resembles a large superficially running intercostal vein. Besides this there are three other dorsal parieto-hepatic veins lying behind it. In the second specimen, with numerous ventral parieto-hepatic veins, I could find only three dorsal ones ; and the first of these was by no means so large as in the first described individual. I could find only one gastro-hepatic ported, which was anterior in position. 6 . On two Points in the Anatomy of the Lacertilian Brain. By F. E. B e d d a r d , F.R.S., Prosector to the Society. f Received May 17, 1905.] (Text-figures 39 & 40.) (1) Note on the Cerebellum in Varanus exanthematicus. In the account of the Lacertilia in Bronn s ‘ Thierreichs the following statement is made concerning the cerebellum of Varanus :-" Das Cerebellum oder das Hinterhirn ist gewohnlich ein unpaarer, diinner, steil und lioch aufsteigender Korper, der seitlich mit der Medulla oblongata fest zusammenhangt. Bei * Bd. vi. p. 714. |