156 



MR. F. E. BEDDARD ON THE ANATOMY 



[Mar. 3, 



rounrled pancreas lies upon the gut, and the small spleen lies at 

 a considerable distance from it and is without any connection 

 with it. The spleen is rounded, distinctly divided into two lobes, 

 but with no tail-like process. On the whole, however, it does 

 not appear to me that these differences have generic value. For 

 I have pointed out precisely similar differences between the two 

 species of Anaconda*. 



Two important anatomical features remain for consideration, 

 in both of which Corallus caninus is more like its South American 



Text-fig. 27. 



— tr. 



■ -^ 'Jim 



m 





Lungs of Corallus caninus cut open to show interior. 



tr. Trachea, r. Eight lung ; the irregular bronchial semirings within this lung 

 are shown on the right near to the septum between itself and the left lung. 



ally. These are the arrangement of the intercostal arteries and 

 the structure of the lungs. As to the former, Corallus caninus 

 has the Boine disposition of the intercostal arteries. That is to 

 say, there are but few of the arteries arising directly from the 



* " Contributio-as to the Anatom}^ of the Ophidia," P. Z. S. 1906, p. 25. I maj' 

 add that Eryx conicus and JB. jolini also differ in this ; for in the latter there is no 

 "tail" to the pancreas. As to the former see above, p. 149. 



