NORTH AMERICAN BIRDS. 
and tail; lower parts exquisitely delicate pale 
peach-blossom pink, fading into pure white in 
dried skins; entire top of head, with nape, uni- 
form deep black; bill black, tinged at base (in 
life) with reddish; feet bright red in life. 
Winter adult: Similar, but forehead and anterior 
part of crown white, the latter tinged with 
grayish and indistinctly streaked with blackish. 
Young: Pileum and nape pale buffy grayish, 
finely mottled or sprinkled with darker, and 
streaked, especially on crown, with dusky; or- 
bital and auricular regions dusky blackish ; 
remainder of head, and entire lower parts, white, 
the nape and sometimes side of breast finely 
mottled with buffy gray; pale pearl-gray of 
back and scapulars overlaid by pale buff, irregu- 
larly mottled with dusky, each feather with a 
submarginal dusky U-shaped mark; bill brown- 
ish dusky; feet dusky (in dried skins). Length 
14.00-17.00, wing 9.25-9.75, tail 7.25-7.75 (forked 
for 3.50-4.50), culmen 1.50, depth of bill at base 
.35, tarsus .85, middle toe .75. Liggs 2-4, 1.66 X 
1.21, similar to those of S. paradisea, but, ground- 
color averaging lighter and markings smaller. 
Hab. Atlantic coast of United States; West 
Indies, and various parts of Old World. 
72. S. dougalli Montag. Roseate Tern. 
e. Top of head black, with a broad white patch on forehead, ex- 
tending backward on each side of crown to above eyes; a 
black stripe across lores. 
Summer adult: Above deep plumbeous-gray, beneath 
paler, more lavender-gray ; tips of secondaries, upper 
and lower tail-coverts, tail, sides of head, chin, under 
wing coverts and axillars pure white; bill and feet 
entirely deep black. Winter adult, unknown. Young: 
Forehead, lores, crown, and entire nape, smoky gray- 
ish brown, deepening on occiput into dark sooty, this 
color extending laterally nearly or quite to eye; the 
smoke-color of nape extending laterally over side of 
neck and breast, or sometimes even tingeing the jugu- 
lum and fore-neck ; back, scapulars, inner wing-coverts, 
and tertials dull slate-blackish, broadly and sharply 
bordered terminally with yellowish ochraceous; upper 
rump dark brownish slate, feathers narrowly tipped 
with pale fulvous, this preceded by a dusky subter- 
