Order LABIFORMES 
No. 152. 
Family LARID^, 
GABIANUS PACIFICUS PACIFICUS. 
PACIFIC GULL. 
Larus PACIFICUS Latham, Index Ornith., Suppl, p. lxviii., 1801 ; New South Wales. 
Pacific Gull, Latham, Gen. Syn. Birds, Suppl., Vol. II., p. 332, 1801. 
Larus pacificus Latham, Index Ornith., Suppl., p. lxviii., 1801; Gould, Birds Austr., 
Vol. VII., pi. 19, 1848 ; id., Handb. Birds Austr., Vol. II., p. 385, 1865 ; Ramsay, 
Proc. Zool. Soc. (Lond.) 1877, p. 347 ; id., Proc. Linn. Soc. N.S.W., Vol. II., p. 201, 
1877 ; id.. Tab. List Austr. Birds, p. 22, 1888 ; North, Austr. Mus. Cat., No. 12, p. 351, 
1889 ; Cox and Hamilton, Proc. Linn. Soc. N.S.W., Vol. XIV., p. 422, 1889 ; 
North, Birds County Cumber., p. 113, 1898 ; Heartland, Birds Melb. Distr., p. 119, 
1900. 
Larus frontalis Vieillot, Nouv. Diet. d’Hist. Nat., Vol. XXI., p. 505, 1818. 
Larus leucomelas id., ib., p. 509. 
Larus hathyrinchus MacgiUivray, Mem. Wern. Soc. (Edin.), Vol. V., p. 253, 1824. 
Gabianus pacificus Bruch, Journ. fiir Ornith. 1853, p. 100 ; Bonaparte, Naumannia 1854, 
p. 211 ; Saunders, Cat. Birds Brit. Mus., Vol. XXV., p. 297, 1896 ; Hall, Key Birds 
Austr., p. 90, 1899 ; Campbell, Nests and Eggs Austr. Birds, p. 862, 1901 ; 
Campbell (A. G.), Emu, Vol. II., p. 209, 1903 ; Sharpe, Hist. Coll. Brit. Mus., Birds, 
p. 151, 1906 ; Hall, Key Birds Austr., p. 90, 1906 ; Mathews, Handl. Birds Austral., 
p. 22, 1908 ; Hall, Emu, Vol. IX., p. 132, 1909 ; Littler, Handb. Birds Tasm., p. 153, 
1910. 
Gabianus bathyrhynchus Bonaparte, Naumannia 1854, p. 21] ; Bruch, Journ. fiir Ornith. 
1855, p. 280. 
Larus pacificus pacificus Mathews, Nov. Zool., Vol. XVIII., p. 212, 1912. 
Larus pacificus bathyrincfius id., ib. 
Distribution. Eastern Austraha. 
Adult male. Differs from L. p. georgii in the broader black band on the tail ; the regular 
band measures 40 mm. in depth, and extends to the outer feather where however 
it is confined to the inner web. 
Adult female. Similar, but smaller. 
Immature. Agreeing with that of L. p. georgii. 
Nest. “ Very neat, the grass used being wound round and round, making a beautiful 
symmetrical hollow — ^three to four inches deep. Placed under the lee of a bunch 
of tussock grass, or some sheltering bush ” (Mellor). 
Eggs. Clutch, one to three ; ground-colour light oHve-brown blotched aU over with 
reddish-brown and lavender ; axis 73-76 mm., diameter 60-53. 
Breeding-season. October to December (North) ; January (Mellor, Spencer Gulf). 
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