132 
D10MEDE1D1E. 
Thalassarche immutabilis (Rothsch.). (25-440.) 
Diomedea immutabilis Rothschild, Bull. Brit. Orn. Club, vol. i. 
p. xlviii, 1893: Lays&n. (Big. Birds Laysan, pi. 39; Godman, 
Monogr. pi. 90.) 
Distr *—Breeding on outer Hawaiian Islands (Ocern, Midway, 
Pearl, and Hermes Reef, Lisianski, Laysan, Gardner, French 
Frigate Shoal, Necker, Nihoa, and Johnston Islands) to 
Marcus Island and adjacent seas. 
Thalassarche chlororhynchus (Gmelin). 
Distr .—South Africa to Australia. 
[Thalassarche chlororhynchus chlororhynchus (Gmelin). (25-451.) 
Diomedea chlororhi/nchos Gmelin, Syst. Nat. vol. i. pt. ii. p. 568, 
April 20th, 1789 : Cape Seas. 
Distr. —Gape Seas, breeding on Nightingale Island, Crozets, 
and St. Paul. Extra-limi tab] 
Thalassarche chlororhynchus carteri (Rothschild). 
Thalassogeron carteri Rothschild, Bull. Brit. Orn. Club, vol. xiv. p. G, 
Oct. 30th, 1903: Point Cloates, mid-West Australia. (Fig. Math, 
pi. 99; Godman, Monogr. pi. 102 a.) 
Distr. — West Australian Seas. 
Thalassarche chlororhynchus bassi (Mathews). 
Diomedea bassi Mathews, Nov. Zool. vol. xviii. p. 200, Jan. 31st, 
1912: New South Wales. (Fig. Math.pl. 9S; Godman, Monogr. 
pi. 102.) 
Distr. —Eastern Australian Seas. 
Genus DIOMEDELLA Mathews. 
Diomedella Mathews, Birds Austr. vol. ii. p. 275, Sept. 20th, 1912. 
Type (by original designation) : Diomedea cauta Gould. 
Diomedella cauta (Gould). 
Distr. —Australia and New Zealand to Cape Seas. 
Diomedella cauta cauta (Gould). (25-449.) 
Diomedea cauta Gould, Proc. Zool. Soc. Loud. 1840, p. 177, July 
1841: Bass Straits. (Fig. Gould, Austr. vii. pi. 40; Math, 
pi. 100; Godman, Monogr. pi. 99.) 
Dic'wedelln cauta rohui Mathews, Austral Av. Rec. vol. iii. p. 55, April 7th 
1916: Sydney. 
Diomedella cauta wallaca Mathews, ib., p. 160, June 25th, 1918: new name for 
rohui. 
Distr. —Eastern and Southern Australian Seas. 
