STEUCORAIrtlDiE. 
151 
Ledris Illiger, Prodr. Mamm. & Ay. p. 272 (prof. April), 1811. Type (by 
subsequent designation, Comas, Proc. Acad. Nat. ScL Philad. 1863, pp. 124, 
128): li. parasitic us Lin no. 
Pradatrix Vieillot, Analyse nonv. Ornith. p. 65, April 14th, 1816. Type (by 
monotypy): Labbe Button — Larus parasiticus Linno. 
Ocean us Koch, Syst. baier. Zool. p. 389 (July), 1816. Type (by monotypy): 
Tj. p&riutilir.tis Linin'. Not of Montfort, Conch. Syst. vol. i. p. 58, 1808. 
ljubbus “ Katinq. 1815,” Gray, Cat. Gen. Subgen, Birds, p. 129, Oct. 1855 : in 
synonymy of Stercorarivx. 
Atalolestris Mathews, Birds Austr. vol. ii. p. 500, Jan. 31st, 1913. Type (by 
original designation): Stercorarius longicaudus. 
Stercorarius parasiticus (Linne). 
Distr. —Northern parts of the Northern Hemisphere to Aus¬ 
tralia. 
[Stercorarius parasiticus parasiticus (Linn£). (25-334.) 
Larus parasiticus Linne, Syst. Nat. 10th ed. p. 136, Jan. 1st, 1758 : 
Coasts of Sweden. (Fig. Dresser, viii. pi. 611.) 
Distr .—Northern parts of the Northern Hemisphere (breeding). 
Bxtra-limital.] 
Stercorarius parasiticus visitori Mathews. 
Stercorarius parasiticus visitori Mathews, Austral Av. Rec. vol. ii. 
j). 126, Jan. 28th, 1015 : Sydney, New South Wales. (Fig. Math. 
pL 124.) 
Distr. —Australia and New Zealand. Winter visitor, breeding 
in Bering Island. 
Genus COPROTHERES Reichenbach. 
Coprotheres Reichenbach, Nat. Syst. Vftgel, p. v, 1852 (1853). Type 
(by original designation): Larus = (Lestris)pomarinus Temmiuck. 
Coprotheres pomarinus (Temminck). 
Distr. —Northern parts of the Northern Hemisphere. 
rCoprotheres pomarinus pomarinus (Temminck). (25-322.) 
Lcstris pomarinus Temminck, Manuel d’Orn. p. 514 (pref. 1814), 
1815 : Arctic Europe. Extra-limital. (Fig. Dresser, viii. pi. 610.) 
Catarracta parasite var, camtschatica Saunders, Cat. Birds Brit. Mus. 
vol. xxv. p. 323 (pref. Dec. 16th, 1895), 1896, as synonym of pomarinus (ox 
Pallas, Zoogr. Rosso-Asiat. vol. ii. p. 312 (1811), 1827 : nude name). 
J)idr .—Arctic Europe (breeding).] 
Coprotheres pomarinus nutcheri Mathews. 
Coprotheres pomarinus nutcheri Mathews, Austral Av. Rec. vol. iii. 
p. 72, July 21st, 1917: Broken Bay, New South Wales. (Fig, 
Math. pi. 123.) 
Distr. —Siberia (breeding), southwards to Australia. 
