482 MR. F. E. BEDDARB ON THE [NoV. 28, 



the fully developed left lung (tbe only lung, as Mr. G, W. Butler 

 has correctly asserted, which exists in Ampkisbcena). The pulmo- 

 hepatic ligament in question is attached to the outer border of 

 the lung, where it is first visible (text-fig. 66, B) at some little 

 distance from the commencement of the lung, but at a greater 

 distance from the termination posteriorly of that viscus. It is 

 seen to be covered by the umbilical ligament when the reptile 

 is dissected so as to leave the umbilical ligament on the left side ; 

 it is furthermore attached at first to that ligament, and has 

 therefore a common attachment with it to the liver. Further 

 forAvai-d (text-fig. 66, C) the course of the attachment of the 

 pulmo-hepatic ligament gradually moves over the lung obliquely 

 until it comes to lie upon its inner border, i. e. that nearest to 

 the liver, or rather by this time the vena cava, for the liver- 

 substance ends anteriorly a good way behind the heart. At the 

 same time the umbilical ligament moves obliquely in the line 

 of its attachment in the opposite dii-ection, so that ultimately 

 (text-fig. 66, A) the inner edge of the lung is tied to the 

 opposite edge of the vena cava by a short mesentery which is 

 formed by the fused pulmo-hepatic and umbilical ligaments, 

 while the inner edge of the lung is attached to the median parietes 

 by a ligament which is presumably umbilical ligament only. 

 These relations will be understood by an inspection of the 

 accompanying figures (text-fig. 66), which represent a series of 

 diagrammatic transvei'se sections through the region of the liver 

 and lung which are dealt with here. These attachments between 

 the liver and lung are not peculiar to Amphishcena, as I believe ; 

 but they are specially obvious in that Lizard on account of the 

 elongation of the organs concerned. The only other ligament in 

 this region of the body which remains to be noticed is the pulmo- 

 gastric, which attaches the lung to the stomach. It extends 

 along the whole lung, and is continued beyond it as a fold upon 

 the stomach, extending back as far as the spleen. 



Ainp)hishcena agrees with other Lizards in the possession of a 

 parieto -hepatic system of veins, which seem, however, to be limited 

 to the dorsal body- wall. I could at least observe no svich veins 

 in the umbilical ligament belonging to the ventral epigastric 

 system. Of the former there are, as Mr. G. "W. Butler has 

 coiTectly pointed out *, five veins distributed along the course of 

 the liver, and not limited, as they so often are, to the right lobe 

 whei'e it is free from the left. These veins (text-fig. 67) are large 

 and for the most part bifurcate with a long course between the 

 point of evergence from the body-wall and of entrance into the 

 liver. They run, of course, in the right hepato-dorsal mesentery. 

 The large number of these veins is not an important character, for 

 in Scincus officinalis I find as many as six. It is their extension 

 along the whole length of the liver which is worthy of note, and 

 is a likeness to the conditions which obtain in the Ophidia. 



* P. Z. S. 1895, p. 699, footnote. 



