Rt. 4- Lt. Eight & Left, 

 r. Vein. 

 V-c.p. Vena cava posterior. 

 V.P. Portal vein. 



712 ME. W. SATILLE KENT ON THE [NoV. 19 



(5) H. Stanniits. 'Handbuch der Anatomie der "Wirbelthiere ' 



[2nd part of the ' Handbuch der Zootomie ' by v. Siebold 

 and Stannius]. 2nd ed. 2nd part, pp. 206-208 [with their 

 footnotes]. Berlin, 1856. 



(6) H. Milne-Edwards. Lemons sur la Physiologie et I'Anatomie 



comparee de I'Homme et des Animaux. Tom. ii. pp. SOT- 

 SIS [and their footnotes]. Paris, 1857. . 



(7) E. D. Cope. " On the Lungs of Ophidia. " Proc. Amer. Phil. 



Soc. vol. xxxiii. pp. 217-224, pis. xi.-xvi. 1894. 



(8) E. D. Cope. " On the Classification of Snakes." Amer. Natu- 



ralist, Oct. 1894, pp. 831-844, pis. xxvii. & xxviii. 



X. EXPLANATION OF PLATE XL. 



A. Artery. 

 Ao. Dorsal aorta. 

 (Esoph. CEsophagus and anterior 

 part of stomach. 



Fig. 1. Heart, lungs, oesophagus, and anterior part of liver of Heterndun 



platyrhinus, seen from ventral side. 

 Figs. 2, 3, and 4. Transverse sections of H. platyrhinus, seen from behind.— 

 Fig. 2 through heart ; Fig. 3 through fork of trachea and left lung 

 Fig. 4 through liver-region. 

 Figs. &-9. Transverse sections of different Snakes through liver-region, all seen 

 from behind ; — 



Fig. 5. Platuncs laticaudatus. 

 Fig. 6. Python rcticulatus. 

 Fig. 7. Tropidonottis natrix. 

 Fig. 8. Vipera herus. 

 Fig. 9. Dryophis prasinus. 

 Fig. 10. Semidiagrammatic view of part of trunk of a two-lunged Snake. The 

 right-hand end, which is seen in section, is the posterior end. The 

 body-wall of the left side is supposed cut away so as to show the 

 various series of blood-vessels which run between the vertebral column 

 and the liver, separating the two lungs. 



2. Observations on the Frilled Lizard, Chlamydosaurus kingi. 

 By W. Saville Kent, F.L.S., F.Z.S., &c. 



[Received October 23, 1895.] 

 (Plate XLI.) 



The Frilled Lizard, Chlamydosaurus Jcingi, is a native of the 

 Northern or tropical districts of Australia, occurring in tolerable 

 abundance in both the Eastern, or Queensland, and the North- 

 western districts of that island-continent. The habits of the 

 species are essentially sylvan, its favourite haunts being the more 

 or less thickly wooded scrub-lands, and its chief resort the trunks 

 and lower limbs of the larger trees. The most remarkable struc- 

 tural feature of Chlamydosaurus, and from which it derives its 

 popular title, is, as recorded in its earliest description by Dr. J. 

 E. Gray in the Natural History Appendix to Captain King's 

 'Survey of the Coasts of Australia,' vol. ii. 1826, the extraordinary 

 development of the cuticle in the neighbourhood of the neck^ 



