510 BULLETIN 50, UNITED STATES NATIONAL MUSEUM, 
Sterna melanorhyncha (not of Gould, 1848) Newton (E.), Ibis, 1863, 460 (Tama- 
tave, Madagascar).—Masters, Proc. Linn. Soc. N. 8. W., 1876, 62.—Ram- 
say, Proc. Zool. Soc. Lond., 1877, 347 (Queensland, Australia). 
Sternula korustes Hume, Stray Feath., 1874, 318 (Andaman Islands). 
(?) Sterna nigrifrons Masters, Proc. Linn. Soc. N. 8. W., 1876, 62 (Warrior 
Reef, Australia). 
STERNA ALEUTICA Baird. 
ALEUTIAN TERN, 
Adults in summer (sexes alike)—Forehead white, extending lat- 
erally to or somewhat beyond posterior angle of eye; rest of pileum, 
together with nape, upper portion of auricular region, and a broad 
stripe on lores, extending from bill to eye, uniform. deep black; rest 
of upper parts mostly plain gray (nearly light neutral gray), the tips 
(sometimes edges also) of secondaries, lower rump, upper tail-coverts, 
and tail immaculate pure white; primaries slightly darker gray, 
their shafts white, their inner webs mostly white but with a broad 
stripe of deep gray nearest to shaft and a narrow edging or sub- 
edging of the same; suborbital and malar regions, lower portion of 
auricular region, axillars, under wing-coverts, and under tail-coverts 
immaculate pure white; rest of under parts, together with neck, all 
round, light gray (pale mouse gray), fading gradually into the white 
of chin and under tail-coverts; bill, legs, and feet black; iris dark 
brown. 
Adults in winter—Similar to summer adults, but, according to 
Saunders,* ‘‘with rather more white on the forehead.” 
Young.—Pileum, lores, and hindneck smoky grayish brown, dark- 
ening on occiput into dusky or dull sooty blackish, this dark color 
extending laterally nearly or quite to eye, the smoky brown color 
of hindneck extending over sides of neck to sides of chest, sometimes 
even tinging median portion of the latter and the foreneck; back, 
scapulars, proximal wing-coverts, and tertials dull slate-blackish or 
dusky brownish gray, the feathers broadly and sharply margined, 
especially at tips, with deep yellowish ochraceous; rest of wing gray, 
the greater coverts and secondaries tipped with white, the primaries 
essentially as in adults; upper part of rump dusky brownish gray, 
the feathers narrowly tipped with pale fulvous, this preceded by a 
subterminal bar of dusky; lower rump and upper tail-coverts gray, 
the lateral coverts paler (sometimes nearly white), the longer ones 
tipped with buff; tail pale gray, the rectrices becoming dusky sub- 
terminally and tipped with deep buff or ochraceous, their inner webs 
paler (nearly white), the outer web of lateral pair pure white; under 
parts white, clouded or stained on sides of chest (sometimes also on 
middle of chest, foreneck, throat, etc.), with smoke brown; maxilla 
@ Cat. Birds Brit. Mus., xxv, 1896, 99. 
