PODlCIPIDiE.—THALASSIDROMID2E. 
105 
[Poliocephalus ruficollis ruficollis (Yroeg). (26-507.) 
Colymbus ntficoUis Yroeg, ex Pallas MS., Cat. Rais. d’Ois., A dumb, 
p. 0, Sept. 1704: Holland, Europe. Extra-limital.] 
Distr, —Europe and Asia. 
Poliocephalus ruficollis novaehollandiae (Stephens). (23-519.) 
Podiccps novahollandicB Stephens, in Shaw’s Gen. Zool. vol. xiii. 
pt. 1, p. 18, Feb. 18th, 1820: New South Wales. (Fig. Gould, 
Austr. vii. pi. 81.) 
Podiceps gularis Gould, Synops. Birds Austr. pt. i. pi. 19, Jan. 1837, and Proc. 
Zool. Soo. Lond. 1836, p. 145, June 27th, 1837 : New South Wales. 
Distr. —South Queensland, New South Wales, Victoria, 
Tasmania, and South Australia. 
Poliocephalus ruficollis carter® Mathews. 
Podiccps Jluviatilis cartene Mathews, Nov. Zool. vol. xviii. p. 107, 
Jan. 31st, 1912 : Broome Hill, South-West Australia. 
Distr .—South-West Australia. 
Poliocephalus ruficollis parryi Mathews. 
Podiccps Jluviatilis parryi Mathews, Nov. Zool. vol. viii. p. 197, 
Jan. 31st, 1912: Parry’s Creek, North-West Australia. (Fig. 
Math. pi. 02.) 
Distr .—Northern Australia and South New Guinea. 
Poliocephalus ruficollis tricolor (Gray). (26-517.) 
Podiccps ( Sylbeocyclus ) tricolor Gray, Proc. Zool. Soc. Lond. 1800 
(1801), p. 300: Ternate. 
Distr. — Celebes, Sangi, Moluccas, Ternate, Batjan, New 
Guinea, Burn, Ceram, Key, Am. Extra-limital. 
Older PROCELLARIIFORMES. 
Family THALASSLDROM1D.F. 
Genus CYMOCHOREA Coues *. 
Cymochorea Coues, Proc. Acad. Nat. Sci. Philad. 1804, p. 70. Type 
(by original designation) : Procellaria leucorrhoa Vieillot. 
Cymochorea castro (Harcourt). 
Distr .—Madeira to Galapagos and Hawaiian Islands. 
* Pacificodroma Bianchi, Fauno dq la Bussie, Ois. vol. i. pt. ii. p. 516, Jan. 1913. 
Type (by subsequent designation, ib. p. 559): Thalassidroma monorhis Swinh. 
