BIRDS OF NORTH AND MIDDLE AMERICA, 789 
[?] Fratercula arctica . . . var. glacialis CLARKE (W. E.), Zoologist, 1890, 46 
(Jan Mayen Land; crit.). 
Mormon glacialis NaumaNN, Isis, 1821, 782, pl. 7, fig. 2. 
Mormon areticus (not Alca arctica Linnzeus) Maumoren, Journ. fir Orn., 1865, 
267 (Spitzbergen)—Watrer, Journ, fiir Orn., 1890, 245, 252 (e. Spitz- 
bergen).—Crarxe (W. E.), Ibis, 1899, 50 (Whale Point Harbor, Olga Straits, 
e. Spitzbergen). 
Fratercula arctica Grant, Oat. Birds Brit. Mus., xxvi, 1898, 616, part (Spitz- 
bergen), 
Fratercula arctica naumanni Norton, Proc. Portland Soc. N. H., ii, May 20. 1901; 
144, footnote, 145, pl. 2, fig. 3 (Spitzbergen; coll. U. S. Nat. Mus.); 
Auk, xxxiv, 1917, 206.—American Orniruoocists’ Unton, Check List, 
3rd ed., 1910, p. 26. 
FRATERCULA CORNICULATA (Naumann). 
HORNED PUFFIN. 
Adults in breeding season (sexes alike).—Pileum uniform grayish 
brown or drab; entire side of head, including superciliary and supra- 
auricular regions, white; neck (all round) and entire. upper parts 
uniform black, the throat more sooty, this passing into brownish gray 
on chin; under parts, including lower foreneck, immaculate white; 
under wing-coverts brownish gray; tip of bill, to between second and 
third grooves, salmon-red along culmen and gonys, elsewhere brownish 
red; basal portion of bill (including first ridge and basal maxillary 
lamina, clear light chrome yellow (in life) ; rictal rosette, bright orange; 
tongue and interior of mouth bright orange; iris brownish gray; eye- 
lids vermilion red, the soft appendages brownish black; legs and feet 
deep vermilion red. 
Winter plumage.—Bill differently shaped, being broader through 
middle than at base, the deciduous nasal cuirass, basal lamina, etc., 
having been shed, all this basal portion dusky, instead of yellow; the 
rictal rosette greatly reduced and pale yellow instead of red; supercil- 
iary horn-like appendage absent, and eyelids brownish gray, instead 
of red; sides of head gray, becoming sooty blackish on orbital and 
loral regions, and legs and feet much paler red. 
Young.—Similar in coloration of plumage to winter adults but bill 
very different, being much less deep, the culmen much less arched, 
the terminal portion of both maxilla and mandible destitute of grooves 
or ridges, and horn color or brownish, without reddish tinge. 
Downy young.—Uniform dark sooty grayish brown, the breast and 
upper abdomen, rather abruptly, white. 
Adult male.-—Wing, 170-187.5 (181.4); tail, 60-68 (64.1); culmen, 
46-55 (50.6); greatest depth of bill, 35.5-50 (43.6); tarsus, 27-30 
(27.9); middle toe, 40-44 (41.3).2 
@ Seven specimens. 
