332 Mr. P. L. Sclater on the Emperor Penguin. 



the bill of A. forsteri (fig. 2) is much shorter and broader 

 i\\^xi ih'oX oi A. pennanti (fig. 1). 



Fig. 1. 



Fiir. 2. 



Fig. 1. — Upper surface of skull of yl. penna/di, reduced ^. 

 Fig. 2. — Corresponding view of skull of A. forsteri, reduced |. 



On comparing the two sterna together great differences are 

 at once observable. That of A. forsteri (fig. 4<, p. 334) is very 

 much longer and broader, and generally larger. 



Some of the principal measurements of these bones of the 

 two species are given in the subjoined table : — 



A. forsteri. A. pennanti. 

 inches. inches. 



Total length of the skull from the point of the 



beak to the base of the occiput 7"0 7'5 



Extreme width of the skull between the squa- 

 mosals 2-6 2-4 



