224 



PATAGONIAN EXPEDITIONS: ZOOLOGY. 



Tail, 6.0 inches. 



Bill (culmen), 1.7 inches. 



Bill (depth at angle), 0.6 inches. 



Tarsus, 2.0 inches. 



Female slightly smaller. 



Color. — Adult male (breeding). General color lavender grey with 

 black mantle and wings. 



Head : Lavender grey. 



Neck : Lavender grey. 



Back : Mantle black ; rump and upper-tail coverts pale grey. 



Wing: Black, with white decorations. Primaries black. The first 

 primary wholly black, the second with a very small white tip. This ter- 

 minal white increases on each primary and on the fifth a white mirror 

 appears on the inner web. The rest of the primary quills have broad 



Fig. 131. 



Fig. 132. 



LcucopJicBus scorcsbyi. 

 Profile of head. Adult 

 male. From specimen in 

 Princeton M u s e u m . 

 About ^3 natural size. 



LeucopluEus scoresbyi. 

 Profile of head. Young 

 of the year. Specimen 

 n Princeton Museum. 

 About Vx natural size. 



white tips, increasing in area inward. The secondaries are black and 

 very broadly terminated with white. The scapulars are also black and 

 terminate broadly with white. LIpper wing coverts : Black. The under 

 wing is wholly smoky in color. 



Lower parts : Entirely lavender grey, rather paler than on the top of 

 the head and back of the neck. 



Tail : Pure white. Bill : Bright red, of a cherry shade. Iris : Pale 



