10 



Mr. C. W. Andrews on a Group of 



which this bone is usually broad and flat, and possessed of a 

 more or less well-developed precoracoid process (except in 

 Apteryx, in which it is rudimentary). This great difference 



Fio-. 4. 



Phororhacos injlatus. f nat. size. 



a. metacarpus ; b. coracoid ; c. ulna. 



(From Amegbino.) 



in the form of the coracoids constitutes, in my opinion, one 

 of the greatest difficulties in the way of supposing that the 

 Ratitse are descended from these extinct forms. The Ratite 



