694 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Lestris schleepii Bruum, Lehrb. Europ. Vég., ii, 1824, 996; Vég. Deutschl., 1831, 
720; Naumannia, 1855, 294; Vogelf., 1855, 336. . 
Lestris benickii Brenm, Lehrb. Europ. Vég., ii, 1824, 996 (Germany, migrant);- 
Vog. -Deutschl., 1831, 723. 
Lestris benickenti Brnam, Naumannia, 1855, 294; Vogelf., 1855, 336. : 
Lestris macropteros Breum, Vog. Deutschl., 1831, 721 (Iceland); Naumannia, 
1855, 294; Vogelf., 1855, 336. 
L{estris] richardsonii Jenyns, Man. Brit. Vertebr., 1835, 282.—EyTon, Cat. Brit. 
Birds, 1836, 51. 
Lestris richardsonit SwAINSON, in Swainson and Richardson, Fauna Bor.-Am., ii, 
1831, 433, pl. 73 (Barren Grounds, lakes of Fur Countries, and Fort Franklin;= 
dark phase).—Nurratt, Man. Orn. U. 8. and Can., Water Birds, 1834, 319.— 
Avpuson, Orn. Biog., iii, 1835, 503, pl. 272; Synopsis, 1839, 332; Birds Am., 
Svo ed., vii, 1844, 190, pl. 452.—GovuLp, Birds Europe, v, 1837, pl. 441 and 
text.—Scuinz, Europ. Fauna, i, 1840, 392.—TEmMincx, Man. d’Orn., 2d ed., 
iv, 1840, 493, 499.—Werner, Atlas, Palmipédes, 1840, pl. 33.—Cresron, 
Orn. Gard, 1840, 495; Faun. Mérid., ii, 1844, 130.—Bovuremiz, Orn. Dau- 
phiné, ii, 1848, 254.—Yarret, Brit. Birds, iii, 1843, 489; 2d ed., iii, 1845, 
611.—Gmavup, Birds Long Is., 1844, 367.—Hewirson, Brit. Oology, ii, 
1831-38, pl. 51 and text.—Taompson, Nat. Hist. Ireland, iii, 1851, 394.— 
Macormrvray, Brit. Birds, v, 1852, 492—Meysr, Ilustr. Brit. Birds, vii, 
1857, 177, pl. 315.—Caaprman, Trav. South Africa, ii, 1868, 425 (Walvisch 
Bay).—Gray (R.), Birds West Scotl., 1871, 496. 
Lestris richardsont BoNaPaRTE, Geog. and Comp. List, 1838, 63. 
Cataractes richardsonti Macaiutrvray, Man. Brit. Orn., pt. ii, 1842, 492. 
Stercorarius richardsoni Cours, Proc. Ac. Nat. Sci. Phila., 1863, 185 (monogr.).— 
SrEBonM, Hist. Brit. Birds, iii, 1885, 353; Ibis, 1888, 349 (Great Liakoff 
Island, Siberia). 
Lestris spinicauda Harpy, Rev. et Mag. de Zool., vi, Dec., 1854, 657 (Ocean 
méridional’’).—VERREAUX, Voy. Vinson Madagasc., Annexe B, 1864, 4. 
L{estris] spinicauda BoNAPARTE, Consp. Av., ii, 1857, 210 (African side of Atlantic; 
St. Helena). 
[Lestris] spinicaudus Bonararte, Compt. Rend., xlii, 1856, 770. 
Stercorarius spinicauda Couns, Proc. Ac. Nat. Sci. Phila., 1863, 186 (monogr.).— - 
Layarp, Birds South Africa, 1867, 366. ; 
Lestris thuliaca Preyer, Reise n. Island, 1862, 418 (Iceland). 
Stercorarius tephras MaumaRen, Journ. fiir Orn., 1865, 390 (Spitzbergen). 
Stercorarius asiaticus Hume, Stray Feath., i, 1873, 269 (Mekran coast); viii, 1879, 
115.—Butier and Hume, Stray Feath., v, 1877, 294. 
Lestris longicauda (not Stercorarius longicaudus Vieillot, 1819) Finscx, Journ. fir 
Orn., 1872, 241; 1874, 203 (New Zealand). 
STERCORARIUS LONGICAUDUS Vieillot. 
LONG-TAILED JAEGER. 
Adults (sexes alike).2—Pileum, loral, and orbital regions, and 
upper part of nape plain sooty black or dull slate-blackish; rest of 
head and neck, including hindneck and lower part of nape, straw 
yellow, paler on chin and throat; upper parts, except as described, 
plain deep brownish gray (lighter on back, where still paler anteri- 
orly), the remiges and rectrices darker, becoming nearly black termi- 
a Apparently this species has no dusky phase, like that of S. parasiticus. 
