536 BULLETI2T 50, UNITED STATES NATIONAL MUSEUM. 



Hydro chelidon Jissi pes Goues, Proc. Ac. Nat. Sci. Phila., 1862, 554 (monogr.); 

 1S66, 99 (Colorado River, Arizona); 1871. 46 (Fort Macon, North Carolina, in 

 migration); Ibis, 1864, 391 (Southern Water Cay, Brit. Hondur^is); Check 

 List, 1873, no. 575. — Salvin, Ibis, 1866, 205 (Coban, Guatemala).— L.\w- 

 REXCE, Ann. Lye. N. Y., viii, 1867, 299 (vicinity New York City); Mem. 

 Bost. Soc. N. H., ii, 1874, 318 (Mazatlan, Sinaloa, winter); Bull. IT. S. Nat. 

 Mus., no. 4, 1876, 52 (San Mateo, Oaxaca). — Dall and Baxxister, Trans. 

 Chicago Ac. Sci., i. 1869, 307 (Fort Yukon, Alaska, breeding).— Sclater and 

 Salvin, Proc. Zool. Soc. Lend., 1871, 573 (monogr). — Gundlach, Joum. fiir 

 Orn., 1874, 314 (Porto Rico); 1875, 393 (Cuba); 1878, 163, 191 (Porto Rico).— 

 Hexshaw, Ann. Lye. N. Y., xi, 1875, 13 (marshes of Great Salt Lake, Utah, 

 breeding).— Brewster, Bull. Nutt. Orn. Club, iii, 1878, 190 (Nantucket 

 Island, Massachusetts, Aug., 1878, numerous). — Z-eledox, Cat. Aves de 

 Costa Rica, 1882, 36. 



[Hydrochelidon] Jissipes Coues, Key N. Am. Birds, 1S72, 323. — Scl.\ter and 

 Salaix. Nom. Av. Neotr., 1873, 148. 



[Hydrochdidon larifonnk] 3. (American references.) Coues, Birds Northwest, 

 1874, 705 (monogr.; not Rallu^ J-arifonnis Linnceus, 1758). 



Eydrochelidon lan/ormis Hexshaw, Zool. Expl. W. of 100th Merid., 1875, 487.— 

 LeBarox, Forest and Sti-eam, 1876, 372 (Ipswich Bay, Massachusetts, 

 Aug. 25, 1875).— Streets, Bull. U. S. Nat. Mus, no. 7, 1877, 27 (Jiiita Point, 

 Sinaloa). — Roberts, Bull. Nutt. Orn. Club, ii, 1877, 34-36 (near MinneapoHs. 

 Minnesota; breeding habits). — Ridgway, Orn. Fortieth Parallel, 1877, 640 

 (Sacramento, CaUfoiTiia, breeding). — Coues, Bull. U. S. Geol. and Geog. 

 Siirv. Terr., iv, 1S7S. 656 (Pembina and Souris River. North Dakota, breeding; 

 habits); Check List. 2d ed., 1882, no. 806.— Browx (N. C), Bull. Nutt. Orn. 

 Club, iv, 1879, 108 (Scarborough, Maine, in fall). 



H\ydrochdidon] hriforviis Nelsox, BuU. Essex Inst., viii, 1876, 149, 150 (n. e. 

 Illinois, abundant summer resident). — Coues, Key N. Am. Birds, 2d ed. 

 1884, 770. 



[Hydrochdidon] lariformis Cory, List Birds West Ind., re^'ised ed., 1886, 34. 



Sienw mdanops Rafixesque, Kentucky Gazette, i, no. 8, Feb. 21, 1S22, p. 3, 

 col. 5, in text (near Harrodsburg. Kentucky). 



Chlidonias melanops Rafixesque. Kentucky Gazette, i, no. 8, Feb. 21, 1822, 

 p. 3. col. 5, in text. 



HYDROCHELIDON LEUCOPTERA (Temminck).a 



WHITE-WINGED BLACK TERN. 



Much like H. nigra sun name mi9, but lower rump and upper tail- 

 coTcrts white (tail also white or very pale gray), and adults with 

 more anterior lesser wing-coverts white and feet vermilion or coral red. 



Adults in summer (sexes alike), — Head, neck, and under parts, 

 except under tail-coverts and anal region, uniform sooty blackish 

 (varying from brownish sooty black to dusky purple-gray) ; back, 



a The far eastern birds of this species have been separated subspecifically. — Sterna 

 grisea Horsfield, Trans. Linn. Soc, xiii, 1820, 190 (Java; tj-pe now in coll. Brit. Mus.). — 

 Hydrodielidon grisea Boie, Isis, 1844, 184. — Hydrochelidon leucoptera grisea Mathews, 

 Birds AustraUa, ii, pt. 3, Sept. 20, 1912, 312 (China to northern .\ustraUa; New Zea- 

 land?); Thayer and Bangs, Auk, xxxiii, 1916, 44 (Saghalin Island; crit.). Messrs. 

 Thayer and Bangs, however, in their series from Saghalin Island, were unable to 

 appreciate any differences from European birds. The smaU series examined by me 

 is not sufficient to justify expressing an opinion in the case. 



