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322 ■ LAEID^, TERNS. GEN. 289-92. 



the upper surface, white underneath ; feet orange. Young ; cap too defective 

 to show the crescent ; bill dark, much of the under mandible pale ; feet 

 obscured. Very small, only 8-9 ; wing G-GJ ; tail 2-3J ; bill 1-1-^ ; tarsus §. 

 U. S. and somewhat northward, chiefly coastwise, abundant. Appears to be 

 perfectly distinct from the European bird. S. mmitta Wils., vii, 80, pi. 

 60, f. 2; AuD., vii, 119, pi. 439. S. svperciliaris Yimhi^OT , Diet. Deterv. 

 1819, xxxii, 176. S. argentea Maxim., Voy. i, 67; Nutt., ii, 280. 8. 

 antillarum and melanorhyncha Lesson, 1847 ; Coues, I. c. 552. S.frenata 

 GAMB.,Proc. Phila. Acad. 1848, 128 ; Laave. in Bd., 864. superciltaeis. 



Trudeau's Tern. Bill orange, crossed by a blackish band, the tip yellow. 

 Entire plumage pearly grayish-blue, little if any paler below than above 

 but whitening on the head ; a black band through the eye ; no black cap. 

 Size and proportions precisely as in forsteri (excepting shorter tail?). 

 South and Central America, rare or only casual on the Atlantic Coast 

 (New Jersey and Long Island, Trudeau). AuD., vii, 105, pl._ 435 ; Lawr. 

 in Bd., 8-61; Coues, I. c. 542. . . . trudeaui. 

 ttt No occipital crest. Feet and bill black; colors darker 

 than in any of the foregoing. Size medium. {Haliplana.) 

 Aleutian Tern. Top of the head black, with a 

 <) I \ white frontal crescent ; back very dark ash, or dull 



FIG. 204. Aleutian Tern. gi^^ty-blue ; Under parts similar, paler; tail white; 

 chin and sides of head, edge and lining of wings, and shafts of primaries, 

 white. Length about 14; wing lOJ; tail 7 J, forked nearly 4; bill 1^; 

 tarsus .55; middle toe and claw 1^. Alaska; one specimen known. A 

 remarkable species, entirely different from any other known to me ; it stands 

 exactly between Sterna proper and Haliplana, and ajDpears related to 

 8. lunata Peale (Cass., U. S. Expl. Exp. 1858, 382). Baird, Trans. 



Chicago Acad., i, 1869, 321, pi. 31, f. 1 aleutica. 



'k 8ooly Tern. Brownish-black, continuous from head to tail ; under parts, 

 outer web of outer tail feather, and a frontal crescent, white. The frontal 

 lunule is short and wide, its horns not reaching beyond the eyes ; the black 

 loral stripe does not quite reach the bill. Very young birds are fuliginous, 

 speckled with white. Length 15-17; wing 11-12; tail 6-8; bill lJ-2 ; 

 tarsus f . Atlantic and Gulf Coast, southerly ; bi'eeds by thousands in 

 Florida, with the noddies. Wils., viii, 145, pi. 72, f. 7 ; Nutt., ii, 284; 

 AuD., vii, 90, pi. 432; Lawr. in Bd., 861 fuliginosa. 



Bridled Tern. ' Slaty-gray, blackening on crown and quills, the color of 

 the head separated from that of the back by an ashj'-gray interval on the 

 cervix; white frontal crescent very narrow, with long horns reaching beyond 

 the eyes, involving the upper ej'elid and forming a superciliarj' line ; black 

 loral stripe reaching the bill ; under parts, and most of 2-3 outer tail 

 feathers, white; smaller than the last, and easily distinguished. Central 

 America, and various warmer parts of the Avorld ; I introduced it to our 

 fauna upon the strength of a specimen from Audubon's collection, now iu 

 Mr. Lawrence's cabinet, labelled "Florida." 8. anosthcetus Scopoli (fide 



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