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Show 468 Mli. F. E. BEDDARD ON THE [Nov. 28, interna," does describe such vessels as I have dealt with above , but his descriptions do not tally exactly with the facts which I have observed, and it is not clear to what species or even to what genus his observations refer. There are also vcnitvcil puvieto-hcpcitic veins connected with the epigastric vein, which are but slightly dealt with by Rathke * and not figured by Jacquartf. These are most conspicuous in the case of the right lobe of the liver. They are partly directly connected with the right epigastric vein and partly enter the ventral parietes separately." There are three of these vessels, which arise from a slender superficial vein running along the ventral surface of the liver and continuous with the anterior abdominal vein posteriorly. The first of these ventral parieto-hepatic veins (i. e., that nearest to the breast) divides into three branches, of which one joins the epigastric and the others plunge into the ventral parietes separately. The second vein is at about the middle of the liver and joins the epigastric. The third is really given off from the anterior abdominal before it enters the liver and joins the epigastric. On the left side there is only one of these veins corresponding in position to the stronger and middle one of the three on the right side. (3) Notes on the Vascular System of Ophisaurus. The most recent memoir known to me which deals with the blood-vessels of Ophisaurus apus (Pseudopus pallasii) is by Prof. Hochstetter +, whose notes refer entirely to the venous system of that Saurian. Some earlier works upon comparative anatomy, such as those of Siebold and Stannius §, contain various facts relating to the blood-vessels. But I find that the recorded knowledge of the course of the arteries and veins in this Lizard is practically confined to Rathke's extensive memoir ]| and to Hochstetter, and does not enable us to draw up anything like a complete account of the vascular system. I have thei'efore thought it desirable to utilise a thoroughly injected example of this Lizard, which was treated immediately after death, for the purpose of a further contribution to the knowledge of the vascular system in Lizards, which matter has been for some time occupying my attention. The origin of the several aortic trunks from the ventricle is as in other Lacertilia and a detailed description of the same is therefore unnecessary here. The carotids show certain peculiarities which are worth noting. The carotid artery arises from the carotid arch just where it turns over to join the systemic arch of its own side in a fashion which does not appear to * Loc. cit. f Loc. cit. t " Venensystem der Amnioten," Morph. Jahrb. xix. 1893, p. 475. § Handbuch der Zootomie, 2 Theil, Amphibien (Berlin, 1856), p. 225. || " Die Aortenwiirzel der Saurier," Denkschr. Akad. Wien, xiii. (1857). |