AZYGOS VEIKS IN MAMMALS. 



191 



1907.] 



extension of this vein such as occurs in, for example, Rhajihicerus. 

 It is interesting to note that Dorcather'mm does not agree with 

 its nearest ally, Tragulus, as the following account of the latter 

 genus will show. 



Of Tragulusmeminna (text-fig. 65) I have been able to examine 

 two adults— one of each sex— and a young one, nearly ready for 



Text-fio-.65. 



post 



Azygos veins of Tragultis 



memmna. 



posf.c. Eemains of posterior cardinal of right side(?). 

 Other letters as in text-fig. 62. 



birth, taken out of the uterus of the female. In all three the 

 azygos was present only on the right side and entered the precaval 

 very near to the heart. The nearness to the heart seemed to me 



