BIKDS — CTERNINAE — STEKNA EBGIA. 859 



Bill long and rather strong, black ; mantle deep black ; under plumage wbite ; tail very 

 deeply forked; legs and feet black S. fuUginosa. 



Bill slender, coral red, black near the end, tip yellow ; mantle light grayish blue ; 

 beneath pearl gray ; tail deeply forked ; the outer web of the lateral feather blackish 

 gray ; legs and feet coral red S. wilsoni. 



Bill slender, deep carmine ; mantle light grayish blue ; under plumage bluish gray ; tail 

 very deeply forked ; legs and feet crimson 8. macrura. 



Bill rather slender, orange yellow at base, black near the point, wjjiich is pale yellow ; 

 mantle bluish gray ; below white ; tail deeply forked ; the outer web of exterior 

 feather white ; legs and feet scarlet 8. forsteri. 



Bill slender, brownish black, orange at base ; mantle pale bluish gray ; under plumage 

 white, with a roseate tinge ; tail very deeply forked ; legs and feet vermilion. 



8. paradisea. 



Bill slender, carmine ; mantle bluish gray ; under surface white ; tail deeply forked ; 

 legs and feet orange , 8. pikei. 



Bill small and slender, pale orange yellow ; mantle bluish gray ; below white ; tail 

 forked ; legs and feet pale orange red 8. fr^nata. 



STERNA ARANEA, Wilson. 



Tlie Mai-sh Term. 



Sterna aranea, Wils. Am. Orn. VIII, 1814, 143 ; pi. Ixxii.— Bonap. Syn. 1828, No. 285. 



Sterna anglica, Nutt. Man. II, 1834, 269.— Aud. Orn. Biog. V, 1839, 127 — Ib. Birds Am. VII, 1844,- 81; 

 pi. ccccxxx. 



Sp. Ch. — Mult. Upper part of the head, occiput and sides of the head upon a line with the lower eyelid, black ; back and 

 wings light bluish gray ; primaries hoary on the outer webs and ashy gray on the inner, becoming lighter towards the base ; tail 

 same color as the back, but paler and with the outer feather nearly white ; a line at the base of the upper mandible, neck in ' 

 front and entire under plumage, pure white ; bill deep black ; iris brown ; legs and feet black. 



Length, 13J inches ; wings in extent, 34, from flexure 104 ; tail, 4 ; bill, 1§ ; tarsus, 1. 



Hab. — Coast of the United States as far north as Connecticut. 



Specimen in my cabinet. 



STERNA CASPIA, Pallas. 



Tlie Caspian Tern. 



Sterna caspia, Pall. Nov. Com. Petr, XIV, 582.— Lawr. Ann. Lye. N. Y. V, 1851, 37. 



Sp. Ch. — Adult. Forehead, crown, sides of the head, and occiput black, glossed with green ; this color extends below the 

 eye, under which is a narrow white line ; back and wings light bluish ash ; the six outer primaries dark slate grey on their inner 

 webs ; quill shafts strong and white ; tail and its upper coverts grayish white ; neck and entire under plumage pure white ; bill 

 and inside of mouth bright vermilion ; legs and feet black. Bill very stout. Tail not deeply forked. 



In the young the back, wing coverts, and tail are mottled and barred with blackish brown. 



Length, 21 j inches ; extent of wings, 51 ; from flexture, 16J ; bill from base, 2| ; depth at base, \ ; tarsus, IJ ; middle toe 

 and claw, 1^ ; tail, 6. 



Hah. — Coast of New Jersey northward . 



Specimens of adult and young are in my cabinet, obtained on the south shore of Long Island, 



STERNA REGIA, Gambel. 



Tlie Royal Tern. 



Sterna cayana, Bonap. Syn. 1828, No. 284.— Nutt. Man. II, 1834, 268.— Aud. Orn. _Biog. 111,1835,505: V, 



639.— Ib. Birds Am. VII, 1844, 76 ; pi. ccccxxix. 

 Sterna regia, Gamb. Proc. Ac. Nat. Sc. Phil. IV, 1848, 128. 

 Thallasseua regius, Gamb. Jour. Ac. Nat. Sc. Phil. I, 1849, 228.. 



