384 



ZOOLOGY 



SKCT. 



FIG. 992 Us. Apteryx aus trails. Skeleton. (From a specimen in the British Museum 



Natural History). 



ORDER 3. STRUTHIONES. 

 Including the true Ostriches (Struthio). 



ORDER 4. ^EPYORNITHES. 

 Including only the post-pliocene Madagascan genus ^pyornis. 



ORDER 5. GASTORNITHES. 

 Including G-astornis and other genera from the Eocene of Europe 



Division B. Carinatae. 



Neornithes in which, with the exception of some flightless species 

 the sternum has a keel, the coracoid and scapula are not ankylosed, 

 the acrocoracoid and usually the furcula are well developed, and the 

 coraco-scapular angle is less than a right angle. There is a pygo- 



