Order PROCELLARIIFORMES 
No. 106. 
Family PROCELLARIIDJE. 
HALOB^NA O^RULEA. 
BLUE PETREL. 
(Plate 91.) 
Peocellaria c^rulea GmeUn, Syst. Nat., p. 560, 1789 ; Southern Ocean. 
Procellaria ccerulea Gmelin, Syst. Nat., p. 660, 1789 ; Buller, Birds New Zeal., p. 306, 1873. 
Procellaria ccerulea Vieillot,Nouv. Diet. d’Hist. Nat., Vol. XXV., p. 421, 1817 ; id., Galerie 
d’Ois., Vol. II., p. 232, 1825 ; Gould, Birds Austr., Vol. VII., pi. 52, 1847 ; Finsch 
u. Hartlaub, Fauna Centr.-Polyn., p. 246, 1867. 
Pachyptila “ ccerulea ” lUiger, Prodromus, p. 275, 1811. 
Prion “ ccerulea ” Lesson, Manuel d’Orn., Vol. II., p. 400, 1828. 
Procellaria forsteri (not Latham) Smith, lU. Zool. South Africa, Aves, pi. Lm., 1840. 
Procellaria similis Forster, Descr. Anim. (ed. Licht.), p. 69, 1844. 
Halobcena ccerulea Bonaparte, Comptes Rendus Sci., Paris, Vol. XLII., p. 768, 1866 ; Kidder, 
Bull. U.S. Nat. Mus., No. 2, p. 34, 1875 ; id., ih.. No. 3, p. 17, 1876 ; Buller, Birds 
New Zeal., 2nd ed., Vol. II., p. 214, 1888 ; Salvin, Cat. Birds Brit. Mus., Vol. XXV., 
p. 431, 1896; Oates, Oat. Birds Eggs Brit. Mus., Vol. I., p. 160, 1901 ; BuUer, 
Suppl. Birds New Zeal., Vol. I., p. 122, 1905 ; Reichenow, Deutsche Siidp. Exp., 
Vol. IX., Zool., pp. 492, 557, 1907 ; Wilson, National Antarct. Exp., Aves, p. 104, 
1907 ; Clarke, Ibis 1907, p. 339 ; Godman, Monogr. Petrels, p. 281, 1909. 
Halobcena ccerulea Bonaparte, Consp. Gen. Av., Vol. II., p. 193, 1857 ; Gould, Handb. 
Birds Austr., Vol. II., p. 457, 1865 ; Coues, Proc. Acad. Nat. Sci. Philad. 1866, 
p. 163 ; Sharpe, Phil. Trans. Roy. Soc. (Lond.), Vol. 168, p. 141, 1879 ; Hall, Key 
Birds Austr., p. 95, 1899 ; Campbell, Nests and Eggs Austr. Birds, p. 913, 1901 ; 
Hall, Key Birds Austr., p. 95, 1906 ; Mathews, Handl. Birds Austral., p. 18, 1908 ; 
Littler, Handb. Birds Tasm., p. 180, 1910. 
Fulmarus cceruleus Gray, Handl. Gen. Sp. Birds, Vol. III., p. 107, 1871. 
Pterodroma {Halobcena) ccerulea Ramsay, Proc. Linn. Soc. N.S.W., Vol. II., p. 202, 1877 ; 
id., Tab. list Austr. Birds, p. 24, 1888. 
Prion cceruleus Vanhoffen, Joum. fiir Ornith., p. 310, 1901 ; Mathews, No\). Zool., 
Vol. XVIII., p. 204, 1912, 
Distribution. Australian and New Zealand seas (South Atlantic Ocean). 
Aduli male. General colour above pale blue-grey ; lesser and median wing-coverts darker 
than the back, like the bastard-wing and primary-coverts ; greater wing-coverts 
hke the back ; the four outer primaries dark brown on the outer webs, white on the 
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