LAKIDAi— STERNINZ: TERNS. 769 
ing, acute, gonys ascending, commissure not decurved; nostrils rather far forward. Tail 
deeply forked, as in Sterna ; feet stout ; toes short, with much incised webs. Plumage bicolor. 
Bill and feet black ; iris red. On the forehead a white crescent, reaching over eyes, separated 
from white of cheeks by a black bridle from eye obliquely downward and forward to bill. En- 
tire upper parts black, deep and uniform, with slight greenish gloss. Entire under parts white, 
reaching on sides of head to eyes, and more than half-way around neck. Primaries blackish, 
lighter on inner webs, their shafts brown above, white below; secondaries like primaries, but 
most of their inner webs whitish ; lining of wings white. Tail like back, duller on under sur- 
face, the long lateral feathers white, with white shafts, blackening toward end, especially on 
inner webs. Young entirely different: Bill black above, dull reddish below; eyes and feet 
dull reddish. Whole plumage smoky-brown, darkes# above, paler and grayish or whitish on 
belly, almost black on primaries, upper wing-coverts and scapulars broadly tipped with white, 
giving a peculiar spotty appearance ; feathers of back, ramp, and upper tail-coverts margined 
with dull rufous. Tail like wings in color, little forked, lateral feathers not elongated. 
Length about 16.50; extent about 34.00; wing 12.00; tail 7.50, forked 3.00-3.50; bill along 
culmen 1.80, gape 2.50; depth at base 0.50; tibia bare 0.70; tarsus 1.00; middle toe and 
claw 1.20; outer do. 1.05; inner do. 0.75; hind do. 0.30. A well-known inhabitant of most 
of the warmer parts of the globe. In N. Am. N. along Atlantic coast regularly to the Caro- 
linas, casually to New England; breeding so numerously on our 8. coast that the eggs are or 
were an article of commerce. Eggs 3, dropped on the sand, 2.12 x 1.50, buff or creamy, 
sparingly marked with spots and splashes of light brown and pale purplish. 
S. anesthe'tica. (Gr. avaic@nrixds, anaisthetikos, stolid, apathetic. Fig. 519.) Brrptep 
TERN. Form of S. fuliginosa, but webbing of the toes less extensive, being nearly as deeply 
incised as in Hydrochelidon. Bill and feet black. Crown, and stripe through eye to nostril, 
black. A white frontal lunula, narrower than in fuliginosa, extends some distance behind the 
eye. The black pileum is, on the nape, sharply defined against ashy-white, which, as it pro- 
ceeds backward, deepens into cinereous-brown, the prevailing color of the upper parts. Wings, 
and especially the primaries, darker than the rest of the upper parts, and with scarcely a shade 
of cinereous ; tail, with its coverts, much lighter and more ashy, approaching the nape in color. 
The primaries have well-defined, pure white spaces running for a considerable distance from 
their bases along the inner web, while in fuliginosa the inner webs are simply grayish-brown, 
with no well-marked pictura. A large part of inner webs of secondaries and tertials white. 
All the under wing-coverts pure white. Central tail-feathers brownish-ashy, concolor with 
their coverts. The lateral ones have much white toward their bases, especially on the inner 
webs, and this increases on each feather successively to such an extent that the next to the 
outer one is wholly white except a small space at its tip, while the outermost is entirely white. 
Shafts of primaries brownish-black above, white beneath; of the rectrices, dark along the 
cinereous, and white along other portions of the feathers. Below, the bird is entirely pure 
white. Dimensions: length 14.00 to 15.00 inches; wing 10.50; tail 6.00 to 7.00; bill 1.04 
to 1.60; height at base 0.35 to 0.40; width slightly less; tarsus 0.85; middle toe the same, 
with the claw 1.20; outer toe and claw 1.00; inner 0.75. Immature plumage: Black of 
pileum imperfect, largely mixed with white on the vertex, so that it fades insensibly into the 
white of the lunula, which latter is thus obscured. The black bridle is correspondingly imper- 
fect. Upper parts paler and grayer, some of the feathers being margined with whitish. Lat- 
eral rectrices not wholly white. Under parts pure white, as before. This is probably not the 
youngest plumage (of which I have yet to see specimens; described as being light-colored 
below from the very first), but rather represents a plumage that closely resembles, if it be 
not identical with, the ordinary winter plumage of the adult. This perfectly distinct species 
inhabits warmer parts of the globe in both hemispheres; West Indies and Florida. (Haliplana 
discolor, Coues.) 
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