Le 
= 
LARIDZA — STERNINE: TERNS. To9 
The forehead is white, usually quite pure; crown white, with small, narrow, distinct streaks 
of brownish-black, along the shaft of each feather. On the sides of the head, before and 
behind the eyes, and over the auriculars, the black is more largely intermixed with the white ; 
and on the nape of the neck, that is, toward the termination of the occipital crest, the black 
is the predominating color, being only slightly variegated with white. Young-of-the-year : 
Everyway much smaller than the adult, the bill especially smaller, shorter, and weaker, 
and of a duller red, more inclining to orange. Upper parts as in the adult, but the pearl- 
hlue everywhere spotted with rather small roundish or hastate spots of brownish-black, 
largest on the tertials. Forehead grayish-white; vertex speckled with grayish-white and 
black, the latter color increasing in amount until it becomes nearly or quite pure on the short 
occipital crest. Wings much as in the adult. Tail much shorter and less forked; the rectrices 
with brownish spaces near their tips, chiefly ou their inner webs. Under parts dull white. 
Legs and feet rather shorter and weaker than those of the adult, but of much the same color. 
Downy young: Grayish-white above, faintly mottled with blackish not aggregated into spots ; 
white below, dusky across throat. Northern Hemisphere: In N. Am. irregularly distributed, 
chiefly in Arctic regions, and along whole Atlantic coast; has lately occurred in various loeali- 
ties in the Mississippi and Ohio valleys; known to breed on coasts of Virginia and Texas. 
Eggs 2, in hollow scooped in dry sand without nest, 2.65 to 2.75 X 1.80 to 1.90, broader and 
more elliptical than those of S. maxima, with smoother and harder shell; ground-color pale 
olive-buff, evenly marked all over with small spots of dark-brown and lavender. Breeds 
commonly by single or few pairs, not in great colonies like S. maxima. 
S. (T.) maxima. (Lat. maxima, largest: not true. Fig. 513.) CAYENNE Tern. Royan 
Tern. Bill about as long as that of S. caspia, but of very different shape, much slenderer, its 
height at base only 
from a fourth to a 
third of its length. 
Culmen gradually de- 
elinato-convex from 
base to tip, the amount 
of curvature increas- 
ing but slightly tow- 
ard the apex, which 
is not very acute. 
Commiissure some- 
what sinuate basally, regularly declinato-convex for the rest of its length. Rami decidedly a 
little coneave along their edges. Gonys straight, shorter than the rami, the prominence 
between the two illy developed. Tibiz bare for a considerable distance (0.90 of an inch). 
Tarsus not longer than middle toe and claw; its anterior aspect shows a tendency toward 
reticulations instead of transverse scutella, but there are usually some scales which extend 
quite across it. The lateral and posterior aspeets are thickly reticulated, as in caspia, but 
the plates are not so rough nor elevated. Tail long for this subgenus, quite deeply forked ; 
central feathers broad to their very tips, which are rounded; lateral ones successively more 
elongated and narrower toward their tips, the external pair slender and quite filamentous for 
some distance. Adult in summer: Pileum glossy greenish-black, not extending below eyes, so 
narrow on side of upper mandible that a broad white streak extends to extreme tip of the 
feathers. Mantle exceedingly light pearl-blue, fading imperceptibly into white on the rump and 
toward the extremities of the tertials. Tail white, witha faint tinge of pearly, especially on the 
central feathers and inner webs of the others. Secondaries pure white for their whole length ex- 
cept asmall space on the outer web near the tip, which is grayish-blue, deeper than the mantle. 
Outer web of first primary grayish-black ; the inner web of the same has a space of black 
Fia. 513. — Royal Tern, 3nat. size. (From Sclater and Salvin.) 
