Narrative of the surveying voyages of his majesty's ships Adventure and Beagle (vol.1): between the years 1826 and 1836 : describing their examination of the southern shores of South America, and the Beagles's circumnavigation of the globe

54>4> CATALOGUE BIRDS. from the carpal joint to the extremity of the second quill feather, 11 ; of the tail 6 ; of the tarsi 2^. 81. Anas specularioides. — Nob. in Zool. Jour. iv. 98. An. capite summo corporeque supra fuscis : subtus pallide griseus, pectore rufo-brunneo fasciato : remigibus, crisso, rectricibusque atris : speculo subangusto purpurascenti-aureo splendente, fascii atrd, alterdque apicali alba. The length of the bird is 24 inches ; of the bill 2^ ; of the wing, from the carpal joint to the extremity of the second quill feather, 10^ ; of the tail 6 ; of the tarsus IJ. Strait of IMagalhaens. This is the common duck in the vicinity of Port Famine, and in the winter months is excellent eating. 82. Anas creccoides. — Nob. in Zool. Jour. iv. 99. An. pallide brumieo-griseus, fusco sparsus notatusque ; dorso imo, ptilisque fuscis, his apice rufo ; speculo nigro, fulvo marginato. The length of the bird is 16| inches ; of the bill 1| ; of the wing, from the carpal joint to the extremity of the second quill feather, 8j3g. ; of the tail 4| ; of the tarsus \\.