SUPPLEMENT—BIRDS OF NORFOLK & LORD HOWE ISLANDS, ETC. 
The following descriptions of nests and eggs have not before been included in 
my works. 
Pterodroma inexpectata (Forster). MOTTLED PETREL. 
Pterodroma inexpectata Mathews, Birds Austr., Vol. VII., pt. v., p. 425, pi. 368, July 10th, 
1919 ; Loomis, Proc. Calif. Acad. Sci., 4th Ser., Vol. II., pt. 2, p. 104, April 22nd, 1918; 
Bent, Life Hist. N. Amer. Petrels, etc., p. 117, 1922 ; Mathews, Syst. Av. Austral., p. 118, 
June 13th, 1927; Stead, Life Hist. N. Z. Birds, pp. 72, 156, 1932. 
Procellaria gularis Peale, U.S. Expl. Exped., Vol. VIII. (Birds), p. 299, Oct., 1848: Antarctic 
regions, Lat. 68° S., Long. 95° W. 
Mstrelata fisheri Bidgway, Proc. U.S. Nat. Mus., Vol. V., p. 656, June 26th, 1883: St. Paul, Kodiak 
Island, Alaska ; Salvin, Cat. Birds Brit. Mus., Vol. XXV., p. 415, 1896 (pref. Dec. 16th, 
1895). 
Mstrelata scalaris Brewster, Auk, Vol. III., p. 390, 1896, July : “ulterior of New York State” 
(accidental) ; Salvin, Cat. Birds, Vol. XXV., p. 416, 1896 (pref. Dec. 16th, 1895). 
Mstrelata affinis Buller, Birds New Zealand, 2nd edn., Vol. II., p. 223, pi. 41, 1888: New Zealand. 
Mstrelata gularis Salvin, Cat. Birds Brit. Mus., Vol. XXV., p. 414, 1896 (pref. Dec. 16th, 1895); 
Godman, Mongr. Petrels, pt. 4, p. 236, pi. 68, April 1909. 
Distribution. New Zealand Seas, (breeding) north to Alaska and America (accidental). 
Nest. In the usual burrow. The nest is a deep cup-shaped structure which fills the floor of the 
nest chamber ; composed of fine grass and small leaves. 
Eggs. Clutch one. Oval or elliptical in shape, the surface of the shell is smooth but lustreless, 
and pure white. The shell is thin and fragile ; its texture is fine and the egg is smooth to the 
touch. The average measurements of six eggs are 60.5 mm. by 42.6. 
Breeding-season. December to January. 
Pound breeding on Preservation Inlet, New' Zealand, on December 12th, 1899, and January 
7th, 1900. The Snares and the islands off Stewart Island. 
Thalassoica antarctica. ANTAKCTIC PETREL. 
Thalassoica Antarctica Mathews, Birds Norfolk and Lord Howe Islands, p. 99, Oct. 16th, 1928; 
North, Proc. Linn. Soc. N.S.W., Vol. XXXVIII., p. 255, Nov. 5th, 1913. 
Nest. In niches amongst the boulders. 
Egg. Clutch one. Dull white and lustreless ; oval to pointed oval or an ellipse in shape ; shell 
rather coarse-grained or having numerous irregularly shaped pittings over its surface. 
68 to 71 mm. by 46 to 48. 
Breeding-season. December and January (?). Adelie Land, 1912. Breeding on King Edward VII.’s 
Land (S. Lat. 76° 50—W. Long. 158°). 
Priocella antarctica (Stephens). SILVER-GREY PETREL. 
Priocella Antarctica Mathews, Birds Austr., Vol. II., pt. 2, p. 126, pi. 82, July 31st, 1912; 
Bent., Life Hist. N. Amer. Petrels, etc., p. 46, 1922 ; Mathews, Syst. Av. Austral., p. 116, 
June 13th, 1927. 
Priocella glacialoides Salvin, Cat. Birds Brit. Mus., Vol. XXV., p. 393, 1S96 (pref. Dec 16th, 1895); 
North, Proc. Linn. Soc. N.S.W., Vol. XXXVIII., p. 255, Nov. 5th, 1913. 
Distribution. Australia and South Polar Seas. 
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