STEUTHIONES 



523 



an open Eustachian groove, and a similar structure of the 

 articular facet for the quadrate. 



The sternum is singular by its extraordinary breadth 

 and great shortness ; the length in the middle line is only 

 one-fifth of the greatest breadth. The hinder border is not 

 notched, but forms a ' gently concave curve.' The antero- 

 lateral processes are stout. There is, of course, no keel. 

 The coraco-scapula is typically ratite, the angle between 



Fig. 251. — Shoulder Gibdle of ^pyomis (aftee Andkews). 

 gc, Ecapula ; pc, procoracoid ; /.spc, foramen supracoracoideum ; ffl, glenoid cavity. 



the two being very slight. As will be seen from the figure, 

 it most resembles that of Casuarius. The bird had a 

 rudimentary humerus. 



DinornithidsB. — This family consists of a number of 

 genera, all New Zealand in habitat ; their remains are so 

 abundant in various parts of the country that they must 

 have existed in countless numbers. That there should have 



