1905. 



ANATOMY OF THE FRILLED LIZARD. 



13 



that of Chlamydosaurus in the strong development of muscular 

 fibres in the posterior double region of the ligament. These 

 fibres pass out on either side over the liver. That muscular 

 fibres occur in the mesenteries of Saurians is of course a quite 

 well-known fact, and is dealt with further on in this commu- 

 nication. That there should be this difference between allied 



Text-fig. 8. 



7?1^ 



Ventral view of liver of Fhi/sii/nathus, to show relation of umbilical ligament. 

 in., muscular fibres in gastrohepatic ligament ; other lettering as in text-fig. 7. 



forms is not without interest. This double and muscular region 

 of the umbilical ligament suggests a portion of the posthepatic 

 septum of the Teiidpe*. 



* Butler, P. Z. S. 1889, p. 166, 



