Larus canus

Larus gavia cinerea major Briss. Orn. VI, p. 182.

Larus canus L. S.N. X. Ed. I, p. 136. — Sehr. Reis. Forsch. Amurl. I, pt. II, p. 509 (pt.).— Swinh. P.Z.S. 1871, p. 420. — Saund. P.Z.S. 1878, p. 177. — Blakist. et Pryer, Tr. As. Soc. Jap. VIII, 1880, p. 189 (pt.?); X, 1882, p. 104.-Blakist. Amend. List B. Jap. p. 20.— David et Oustal. Ois. Chine, p. 517. — Stejneg. Resuit. Orn. Expi. Comand. Isl. a. Karatsch. p. 76; Pr.ü.S. Nat. Mus. 1887, p. 123.-A.O.Ü., Chek-List N. A. B. p. 90.- Nikolski, Ile de Sakhaline et sa faune, 276.

Larus cinereus Scop. Ann. I. Hist. Nat. I, p. 80.

Larus Jiybernus Tunst. Orn. Brit. p. 3.

Larus procellosus Bechst. Orn. Taschb. II, p. 373.

Larus cyanorhynclius Meyer, Taschb. II, p. 480.

Larus heinei Homeyer, Naumannia, 1853, p. 129.

L. niveus, pallio cyanescente-cano; remige prima tota nigra, fascia subterminali latissima alba, secunda diinidio terminali nigro, fascia lata et macula apicali albis, tertia apice late nigra, macula pogonio interno et terminali albis, quarta et quinta apice nigris, macula alba terminatis; sexta maculis binis nigris subterminalibus; rostro olivaceo-flavo, apice flavo; annulo orbitali rubro; pedibus olivaceoflavis.