ORNITHOLOGICAL EXPLORATIONS. 61 



soft parts are somewhat wrong, as will be seeu by a comparison with 

 my figure drawn from the fresh specimen. But he commits a rather 

 curious mistake in the same figure by retaining the summer coloration 

 of the plumage, when it*is intended to show the bird as it is in winter. 

 My figures, both of the adult and the young, obtained February 24, 1883, 

 are taken from the fresh specimens, and are so accurate and detailed as 

 to make a special description of them superfluous. His suppositions as 

 to the shedding of the different parts is undoubtedly correct. 



•A few corrections to his article {op. cit. pp. 28-31) are necessary, 

 however. It is superfluous to call attention to the erroneous descrip- 

 tion of the color of the bill which is given as " orange, uuicolore." 



"Sommet de la t6te d'un noir grisatre" {L c, p. 29, top of head of a 

 grayish black), gives an entirely wrong idea of the color of the cap, 

 which is blackish broumj contrasted strongly and in a well-defined 

 straight line across the nape with the glossy black of the neck and back. 



The term "horns," for the deciduous caruncles above and below the 

 eyes is very misleading. Being hard in the dried specimen, the general 

 impression is that these "horns" are "horny" in the living bird, and 

 that this is also the opinion of Mr. Bureau is evident from his expres- 

 sion, " deux appendices comes, allonges, libres, en forme de comes d'un 

 gris de fer." This is a mistake", however, for the "horns" are only soft 

 and flexible caruncles or wattles, covered with a delicately glossed skin, 

 as if made of silk, which, moreover, is not " d'un gris de fer," but of a 

 decided blackish brown. The " horns" are soft as late in the season as I 

 had opportunity of examining specimens. I have no note, however, of 

 any later than the beginning of August. 



The winter plumage differs from that of the summer bird only in the 

 coloration of the sides of the head, which at that time are blackish in 

 front of and round the eyes, shading into gray behind and below. 



The young in the first plumage are similarly colored, only somewhat 

 duller, and the color of the under parts is absolute pure white, difier- 

 ing in that respect from the young of Lunda cirrhata, which is always 

 grayish, or washed with this color, at least. The downy chicks are still 

 easier to distinguish, for in cirrhata they are uniform black fading into 

 a smoky brownish, while the pullus of comiculata has the downs of 

 the breast and abdomen pure white, in strong contrast to the black of 

 the other parts, consequently like the chicks of Fratercula arctica. 



On the Commander Islands the name '^IpatJca,^^ or ^^Ipatol;^^ as it 

 is pronounced on Copi^er Island, is exclusively used for this species, 



