AVES SPHENISCID^E. IO5 



Exposed culmen, 2.4 to 2.55 inches. 



Wing, from shoulder to tip, 8.0 to 8. i inches. 



Tail, 3.5 to 3.9 inches. 



Adult female birds are somewhat smaller than adult males, and the size 

 of the bill varies much with age, being least developed in immature full 

 grown birds of the previous year. 



Color (adult). — The general color of the upper parts is similar to that 

 of C. chyysoconie, dark slate ; the under parts white. 



Head : The forehead, and back of the crown black, the feathers of the 

 middle and sides of the crown being golden orange at their bases, with 

 lengthened pointed black extremities. A superciliary stripe much as in C 

 cJirysocome but only the posterior feathers elongated into plumes. They 

 are uniform orange in color, the longest measuring about three (3) inches. 

 The sides of the head and face smoky black. 



Neck: Above like the back, dark slate ; each pointed feather black or 

 dusky, edged externally with dark bluish slate. Below white, except the 

 upper neck, the throat and chin which are deep smoky black. The throat 

 has a distinct silver shading. 



Back : Similar to that of C. cJirysocouic. Some individuals have a 

 well-defined patch of greyish white in the middle of the upper tail coverts. 



Wing (Flipper) ; The upper surface is like the back, edged posteriorly 

 with white. The lower surface is white, shading into blackish on the 

 anterior margin, especially toward the tip. There is a black patch at the 

 base of the posterior margin. 



Tail, composed of fourteen (14) feathers and colored like the back. 



Immature birds differ from adults in having the basal part of the 

 feathers of the crown and superciliaries yellower, and in the much smaller 

 size of the bill. 



GcogyapJiical Range. — Falkland Islands, South Georgia, Prince Edward 

 Island, Maroni Island, Kerguelen Island and Heard Island. 



The Macaroni Penguin was not obtained by the Princeton Expedi- 

 tions. The description is based on material in the British Museum of 

 Natural History. 



At Kerguelen Island Dr. Kidder describes this penguin breeding as 

 follows : 



