III. ON SOME POINTS IN THE ANATOMY 



OP THE 



EMPEKOE AND ADELIE PENGUINS. 



BY W. P. PYCRAFT, A.L.S., F.Z.S. 

 (1 Plate and 8 text-figures.) 



CONTENTS. 



PAGE 



I. INTRODUCTORY .... ....... 1 



II. PTERYLOSIS OF THE ADULT ........ 2 



III. THE NESTLING DOWN ......... G 



IV. THE MOULTING OF THE ADULT . . . . . . .13 



V. THE SYRINX OF THE ADULT EMPEROR PENGUIN . . . . .14 



VI. SOME FACTS CONCERNING THE EMBRYO AND NESTLINGS. . . .15 



VII. THE INTESTINAL TRACT ......... 20 



VIII. SUMMARY . 22 



I. INTRODUCTORY. 



IN the preparation of this report L have confined myself to a careful study of the 

 nestlings and embryos, and to certain hitherto undescribed, or wrongly interpreted 

 points concerning the pterylosis of the adults of the Emperor and Adelie Penguins ; 

 and this partly from choice and partly from necessity, since no complete adults in 

 spirits formed a part of the collections brought home. Even had such specimens been 

 preserved they could have added but little of importance to our knowledge of these 

 remarkable birds. Thanks to the able monograph of Prof. M. Watson, which formed a 

 part of Vol. VII. of the great series of volumes published on the results of the 

 ' Challenger' expedition of 1872-76, we may be said to have a fairly complete know- 

 ledge of the general anatomy of the adult penguin, though much yet remains to be 

 done from the systematist's point of view. Therein, at any rate, will be found a survey 

 of the anatomy of nearly every genus, most of which holds good to-day, though in 

 some particulars further research or better material have reversed conclusions therein 

 expressed. In the memoirs of Prof. Menzbier (9), Schaunisland (14) and Studcr (16), 

 will be found much valuable matter with regard to the development of the penguin, 



