aneqere> 
LARIDZ, TERNS.—GEN. 289-92. 321 
entirely wanting, and in its place is a broad black band on each side of the 
head through the eye; several lateral tail feathers are largely dusky on 
the znner webs; their outer webs are white. (Sterna havelli! Aupuson, 
vii, 103, pl. 334.) N. Am., at large, abundant. S. hirundo Sw. and Ricu., 
F. B.-A. ii, 412; S. forstert Nutv., ii, 274; Lawre. 
in Bp., 862. See Cours, Proc. Phila. Acad. 1862, 
DAS TOs IDs 201s LOM Ade 2s 3  . | KORSTERIT. 
Arctic Tern. Bill carmine or lake-red throughout ; 
feet vermilion. Plumage like that of-hirundo, but 
much darker below, the plumbeous wash so heavy 
that these parts are but little if any paler than the 
mantle ; crissum pure white in marked contrast; the 
throat and sides of the neck pale or white. In 
winter, cap defective; in young, the same; upper 
parts patched with gray, brown or rufous; under 
parts paler or white; a dark bar on the wing; outer 
webs of several tail feathers dusky; Dill blackish or dusky-red with 
yellow on the under mandible; feet dull orange. Smaller than hirundo, 
but tail much longer. Length 14-17; extent 28-30; wing 10-12; tail 
5-8 ; bill 14-12; tarsus only 4-3 ; whole foot about 13. Europe; N. Am., 
especially coastwise and northerly; breeds plentifully in New England and 
northward; abundant in Alaska. S. arctica Sw. and Rion., F. B.-A. ii, 
414; Nurvt., ii, 275; Aup., vii, 107, pl. 436; S. macroura Lawr. in Bop., 
SOF SOUNG UNG AQ mee, hots a hey ie gh pa) a ald al bea MACROURA. 
Pikes Tern. Bill black, or reddish-black, the point often whitish. Plum- 
age resembling that of hirwndo, and size about the same; wings and tail 
relatively longer ; bill 14-14, very slender, 1-2, high at the base; tarsi 4-3. 
Pacific Coast, N. Am. I have never seen an adult, nor indeed any authentic 
specimen of this bird; but the type of Sterna pikei (a young bird, in poor 
condition) which I have examined, seems almost unquestionably referable 
here ; if not this species, it is a young macroura. SS. longipennis NorpMann, 
Verz. 1835, 17; MippEnporr, Sibirische Reise, 246, pl. 25, f. 4; ScuLEGEL, 
M. P.-B. Sterne, 23. S. pikei Lawr., Ann. Lye. 1853, 3 and in Bp., 863; 
Compe teca 0 Oveetamaeth Gece Seyrecp cc pe Poco seTe ls, Goren) LONGIPENNIS. 
Roseate Tern. Bill black, usually orange at base below. Mantle very 
pale pearly blue; primaries with the white band broad and usually extending 
to the very tip; below, pure white, or rosy-tinted; feet coral-red. Changes 
of plumage as in other species. Length 12-16; wing 9-10; ¢ail 5-8; bill 
14-13, very slender; tarsus 3-3. Atlantic Coast, U. S., abundant. S. doug- 
allii Nutv., ii, 278; Aup., vii, 112, pl. 437; S. paradisea Lawr. in Bp., 
DUB PRCOUNGT a Ga Mire chea tues 0 Ue walt eam ech on 3 925s) 0 ow PARADISAAS 
Least Tern. Bill yellow, usually tipped with black. Mantle pale pearly 
grayish-blue, extending unchanged on the rump and tail; @ white frontal 
crescent, separating the black cap from the bill, bounded below by a black 
loral stripe reaching the bill; shafts of two or more outer primaries black on 
KEY TO N. A. BIRDS. 41 
Fic. 203. Foot of Forster’s Tern. 
