508 STEUCTURE AND CLASSIFICATION OF BIRDS 



and Mitchell noted in the former genus that the gall 

 duct and the pancreatia duct opened into a distinct diverticu- 

 lum of the duodenum. 



Fig. 237.— Sybikx or Bhea americana. Feont View. (ApteS Foeees.) « 



In Apteryx there is a gall bladder. 



The chief source of information about the windpipe and 



Fig. 238. — The same, ebom behind. 



syrinx of the Struthionidse is contained in a memoir by 

 FoEBBS.' These birds, as a rule, possess no specially modified 



' On the 



. Trachea in the Eatite Birds,' P. Z. S. 1881, p. 778. 



