4 Mr. C. W. Andrews on a Group of 



able to find that resembles Phororhucos in this point is the 

 remarkable Stork, Balaniceps rex, in which also the beak is 

 extraordinarily Inrge. 



It is unfortunate that the ventral surface of tlie skull is 

 unknown, so that further material must be aw^aited before 

 the important characters of that region are available for 

 comparison with other forms. 



Fi-. 2. 



Skull of Phororhacos infatvs from above. | nat. size. 

 (From Ameghino.) 



When it is remembered that the systematic position of 

 many recent birds, the anatomy of which is well known, is 

 the subject of great diversity of opinion, it can hardly 

 be supposed that it will be possible to attain any certainty 

 as to tbe affinities of these extinct forms, of which even the 

 skeleton is incompletely known. Nevertheless a comparison 



