320 STEKCOEAEIID.E. 



Edw. Faun. Rdg. australes, cli. iv. p. 21 (1882) ; Saunders, Voy. 



' Chnllenyer,' ii. {Birds) p. 139 (1882) ; McCormick, Voy. Discov. 



Antarct. i. p. 142, cum tab. (1884: Campbell I.); Sharpe, ed. 



LayarWs B. S. Afr. p. 696 (1884) ; Ler/ye, Pr. B. Soc. Tasman. 



1886, p. 243 (1887) ; Ramsay, Tab. List Ausfr. B. p. 22, no. 687 



(1888) ; Bul/er, B. N. Zeal. 2nd ed. ii. p. 63 (1888) ; Oustalet, Miss. 



So. Cap Horn, vi. (1891) p. 169; H. 0. Forbes, Ibis, 1893, p. 530 



(Chatbam Is.) ; Sclater, Ibis, 1894, p. 495 & p. 497 (American 



Antarctica). 

 Cataracta antarctica, Bp. Naiim. 1854, p. 210 ; id. C. R. xlii. p. 770 



(1856). 

 Catavrbactes antarcticus, Bruch, J. f. 0. 1853, p. 108. 

 Stercorarius antarcticus, a. madagascarensis, Bp. Consp. Av. ii. p. 207 



(1857). 

 Mewalestris antarctica, Gould, P. Z. S. 1859, p. 98 (Falkland Is.) ; 



Payenstecher, Ber. Naturhist. Mus. zu Hamhury, 1884, p. 24 (1885) ; 



Neumai/er, Dentsch. Ecped. Bd. ii. p. 259 (1890 : South Georfjfian 



Is.) ; Ridyw. Pr. U.S. Nat. Mus. xii. p. 139 (St. Peter & St. Paul Is.). 

 Lestris fuscus, Ellman, Zooloyist, 1861, p. 7472. 

 Buphagus antarcticus, Cones, Pr. Philad. Acad. 1863, p. 127 ; id. B. 



N.-West, p. 604 (1874); Kidder i^- Coues, Contr. Nat. Hist. Ker- 



yuelen-Ld. p. 9 (1875). 

 Stercorarius catarrbactes (h), Schley. Mus. P.-Bas, Lari, p. 47 (1865) ; 



Gould, Handb. B. Austr. ii. p."389 (1865) ; Layard, B. S. Afr. 



p. 366 (1867) ; Sperliny, Ibis, 1868, p. 295 (Comoro Is.) ; ScM. 8f 



Poll. Faun. Maday., O'is. p. 145 (1868) ; Sharpe, Zool. ' Erebus' i^ 



' Terror; i. App. p. 32 (1875). 

 Bupbagus skua antarcticus, Coues in Bull. U.S. Nat. Mus. no. 2, 



p. 9 (1875: Kerguelen I.). 

 Stercorarius catarrbactes, var. antarcticus, Milne-Edw. i^ Grandidier, 



Hist. Nat. Maday., Ois. p. 643 (1882). 

 ? Stercorarius parasiticus, Finsch, Ibis, 1888, p. 309 (Snares I., New 



Zealand, " on the rocks, feeding on young Penguins"). 



Adult. Larger, as a rule, than either of the two preceding species, 

 and of a dark browu on the upper parts, especially on the crown, and 

 a slightly paler brown on the under surface ; very few, if any, rufous 

 markings on the feathers of the mantle, though these are often 

 weather-worn and greyish at their tips ; under wing-coverts dark 

 sooty brown, with no signs of rufous : bill black, stout ; tarsi black, 

 often mottled with yellow ; toes black. Total length of examples 

 from the Southern Ocean 23 to 24 inches ; culmen 2-5, and depth 1 ; 

 wing 15-5 to 16-5 and even 17 ; tail G-5 to 7, tarsus 3 to 3"25, 

 middle toe with claw 3'35 to 3*5. Specimens from the Falkland 

 Islands are smaller and have more pronouncedly yellowish acuminate 

 feathers on the neck ; average length 21 inches, culmen 2*2, wing 15, 

 tail 6-5, tarsus 2-7, middle toe with claw 2-9. 



Immature. Similar, but the crown less pronouncedly dark, and no 

 yellow tinge on the acuminate feathers of the neck. 



Youwj. Similar, with a very slight tinge of rufous on the under 

 surface as well as at the extremities of the feathers of the mantle 

 and wing-coverts. 



Nestling. Buffish white, slightly darker on the upper surface. 



Hah. Southern Ocean: from American Antarctica, the Falkland 

 Islands, and South Georgian Islands, by Trista da Cunha, Prince 



