686 BULLETIN 50, UNITED STATES NATIONAL MUSEUM, 



435; 1st Resoc. Avil. Ital., 1889, 650; 2d Resoc, 1890. 661.— Taczanowski 

 Orn. du P^rou. iii, 1886, 458.— Salvadori. Ucc. Ital., 1887. 290.— Mac- 

 Farlane. Ibis, 1887, 206 (Callao Bay, Peru).— Tait, Ibis. 1887. 396 (Portu- 

 gal). — Harvie-Brown and Buckley, Faun. Outer Hebrides. 1888, 151.— 

 Reichenow. Syst. Verz. Vog. Deutschl., 1889, 64. — Stevenson and South- 

 well, Bii"ds Norfolk, iii, 1890, 398. — Buckley and Harvie-Brown, 

 Fauna Orkneys. 1891. 237; Fauna Argyll and Inner Hebrides, 1892, 194.— 

 Hartert, Ibis, 1892, 591 (e. Prussia). — Irby, Orn. Straits Gibralt., 2d ed., 

 1895, 302.— ScHALOW, Journ. fur Orn.. 1895. 464 (w. Greenland).— Pearson, 

 Ibis. 1896, 219 (Kolguev, Russia), 224 (Novaya Zemlya; habits); 1898, 203 

 (Waigats, Novaya Zemlya, and Lutke Land). — Popham, Ibis, 1897, 107 

 (Yenesai River and Golchika, Siberia; descr. nest and eggs); 1898. 519 (Doo- 

 dinka. Yenesai River). — Trevor-Battye, Ibis, 1897. 593 (Spitzbergen). — 

 GiFFORD. Proc. Calif. Ac. Sci., 4th ser., pt. i, 1913, 46 (Albemarle Island, 

 Galapagos, Dec. 15, 1897).— Mathews, Birds Australia, ii, 1913. pi. [123] 

 facing p. 498. 



[Stercorarius] pomatorhimis Coues, Key N. Am. Birds, 1872, 309. — Sharps. 

 Hand-list, i, 1899, 144. — Forbes and Robinson, Bull. Liverp. Mus., ii, 

 no. 2, 1899, 59. 



S[t£rcoranus] pomatorhinus Nelson, Bull. Essex Inst., \dii, 1876, 145 (Lake Michi- 

 gan, near Chicago, Oct. 9, 1876, and near Evanston, Illinois). — Coues, Key N. 

 Am. Birds, 2d ed., 1884, 735. 



[Coprothcres] pomalorhinus Heine and Reichenow, Nom. Mus. Hein. Orn., 1890, 

 360. 



[Catarrades parcmta, var.] camtschatica Pallas. Zoogr. Rosso- Asiat., ii. 1826. 312. 



Coprotheres pomarinus camtschatica Mathews. Birds Australia, ii, pt. 5, Jan. 31, 

 1913, 498 (Alaska to Siberia). 



L[estris\ sphaeriuros Brehm, Isis, 1830, 993 {nomen nudum). 



Lestris sphaeriuros Brehm, Vog. Deutschl., 1831, 718; Naumanuia, 1855, 294; 

 Vogelf.. 1855. 336. 



L[estris] striatus Eyton. Cat. Brit. Birds. 1836, 51 (ex Stercorarius striatus Brisson, 

 Orn., vi, 152. pi. 13, fig. 2, =young). 



Stercorarius striatus Olphe-Galliard, Orn. Eur. Occid., fasc. x, 1886, 7. 



Stercorarius catarrades (not Lestris catarractes lUiger) Wright, Ibis, 1864, 150 

 (Malta). 



[Lestris pomarinus] a.fuscus Bonaparte, Consp. Gen. Av., ii, 1857, 208. 



Genus STERCORARIUS Brisson. 



Stercorarius Brisson, Orn., vi, 1760, 149. (Type, by iautonymy, [Stercorarius] 



stercorarius Briason=Lants parasiticus Linnaeus.) 

 Lestris Illiger, Prodromus Orn., 1811, 272. (Type, Larus parasiticus Linnaeus.) 

 Fraedatrix Vieillot, Analyse, 1816, 65. (Type, Labe BuUon^Larus parasiticus 



Linnaeus.) 

 Oceanus (not of Montfort, 1808) Koch, Syst. baier. Zool., 1816,^380. (Type, Larus 



parasiticus Linnaeus.) 

 Atalolestris Mathews, Birds Australia, ii. pt. 5, Jan. 31, 1913, 500. (Type, by 



original designation, Stercorarius longicnudus Vieillot.) 



Small Stercorariidse (wing 295-342 mm.) with elongated middle 

 pair of rectrices tapering and pointed terminally, not twisted, and 

 depili of bill at base not greater than its width at same point. 



BiU relatively small, much shorter than head, the exposed culmen 

 decidedly shorter than middle toe without claw, its deptli at base 



