302 
ALCA. 
liorrectis nares ahscondentibus. Alae breves^ volatiles, remigibus secundariis abbre- 
viatis aut minutae, pennatae at inept ae. Cauda brevis, rectricibus 12 — 16. Pedes 
aver si breves ^^aZwaii tridaetyli, halluce nulla. Digiti exteriores subaequales, in- 
terno longiores, medius externa paulo longior. Ungues falculares, curvaii^ acuti^ 
mediiLS major. Tarsus digito medio tertia parte brevior, antice et postice carinatus. 
Podotheca reticulata, acrodactylis scutulatis. — 11 Specc. 
alee Gmelin, Syst. Natur. I. 544. = Alca alle L. 
alle Linne, Syst. Natur. I. 211. — Wilson, americ. Ornith. IX. Tb. 74. Fig. 5. 
— Schlegel, Mus. Pays bas ürinatores 20. 
[Europa septentr. America sept, orient. 
Mergulus melanoleucus Ray. Stephens, gener. Zool. XIII. 345. — Coues, 
Proceed, acad. Philadelphia 1868. 54. 
Columba groenlandica Albanus, Aves 81. Tb. 85. 
Plautus columbarius Klein, Prodr. Avium 146. 
Alca Candida Brünnich, Ornith. bor. 1764. 26. 
le petit Guillemot femelle Buffon, Pl. enlum. 917. 
Uria minor Brisson, Ornith. VI. 73. 
Uria aile Pallas, Zoogr. ross. asiat. II. 369. — Audubon, Ornith. Biogr. 
V. 304. Tb. 339. 
Alca alce Gaielin, Syst. Natur. I. 544. 
Mergulus alle Vieillot, Galerie Oiseaux 236. Tb. 295. — Naumann, Natur- 
gesch. Vögel Deutschlds. XII. 552. Tb. 334. — Gould, Birds Europe 
V. Tb. 402. — Baird, Birds N.America 918. — Coues, Proceed, acad. 
Philadelphia 1868. 54. 
Mergulus arcticus Brehm, Vögel Deutschlds. 994. 
Arctica aile Gray, Genera Birds 1849. III. 644. 
Zwergkrabbentaucher, kleiner Alk, kleine Lumme , kleine Seetaube., Eisvogel, 
Trollvogel, Rotter, Rotges, Murre. — Dovekie, the Sea Dove, the little 
Auk. — Haftir dill. Halkion. — Groenlands Dufwa. Pederdriker. 
aiitiqua Gmelin, Syst. Natur. I. 554. = Schlegel, Mus. Pays bas Ürinatores 
211. [Ocean, pacif. sept. 
Uria senicula Pallas, Zoogr. ross. asiat. II. 369. Tb. 85. 
Fratercula antiqua Stephens, general Zool. XIII. 42. 
Uria antiqua Audubon, Ornith. Biogr. V. 100. Tb. 402. Fig. 12. — Schle- 
gel, Fauna japon. Tb. 80. 
Mergulus cirrhocephalus Vigors, Zool. Voy. Beechey Birds 32. 
Synthliborhamphus antiquus Brandt, Bullet, acad. Petersbg. 1837. II. 347. 
— Coues, Proceed, acad. Philad. 1868. 56. 
Arctica cirrhocephala, Brachyrhamphus antiquus Gray, Genera Birds 1849. 
III. 644. 
Anobapton antiquus Bonaparte, Compt. rend. 1856. XLII. 774. 
Brachyrhamphus brachyptei'us Brandt, Bullet, acad. Petersbg. 1837. II. 346. 
— Coues, Proceed, acad. Philadelphia 1868. 67. 
Uria brachypteryx Kittlitz, Mscr. 
The ancient Auk, the grey headed Auk. 
arctica Linne, Syst. Natur. I. 211. — Fratercula arctica Steph. 
arra Schlegel, Mus. Pays-Bas ürinatores 16. [Terrae arcticae. 
Cepphus arra Pallas, Zoogr. ross. asiat. II. 347. 
Alca lomvia Linne, Syst. Natur. I. 130. 
Uria troile Brünnich, Ornith. bor. 27. 
Uria Brünnichi Sabine, Transact. Linn. Soc. 1818. XII. 539. — Audubon, 
Ornith. Biogr. IIL 336. Tb. 345. — Gould, Birds Europe V. Tb. 398. 
Uria Francsi Leach, Transact. Linn. Soc. 1818. XII. 588. — Stephens, 
gener. Zool. XIL 243. Tb. 62. Fig. 2. 
Uria pica Fabricius, Fauna groenland. 79. 
Uria arra Naumann, Naturgesch. Vögel Deutschlds. XII. 535. Tf. 333. 
Uria svarbay Brünnich, Ornith. bor. 27. 
