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

542 CATALOGUE BIKDS. Interior Sounds on the west coast of Patagonia. Dlolina describes a Chilian duck, anas coscoroha, thus : A. rostro extremo dilatato rotundato ; corpore albo ; but I do not think it can be the same as mine, or he would have noticed its red feet and bill. It certainly is not A. candidus, of Viellot ; the ganso bianco of D'Azara, which the author of the article in the Diet. d'Hist. Nat. xxiii. supposes to be the one and the same with A, coscoroha. Molina gives but a short description of that bird. 73. Anser inornatus. — Nob. in Proceedings of Zool. Society. Mas. Alls, albus : dorso inferiori, cauda, fasciis nucha; dorsique superiorisfemorumque tectricum, pteromatibus, remigibusqiie atris : rostro nigro, pedibusjiavescentibus. FcEm. Capite colloqtie canis ; dorso superiori corporeque inferiori alhis, nigro confertimfasciatis ; dorso imo remigibus, rectricibusque nigris ; ptilis speculoque albis ; tarsis subelongatis. Strait of Magalhaens. 74. MiCRopTBRUS BKACHYPTERUS. — Quoy and Gaimard. Zool. del'Uranie, pl.39. Oidemia patachonica. — Nob. Zool. Journal, iv. 100. Anas brachyptera. — Latham. Racehorse. — Cook. — Byron. Micropt. supra plumheo-grisescens, abdomine albescente specula alarum albo ; rostro luleo ; ungue nigro. 75. MicROPTERUs Patachonicus. — Nob. in Proceedings of Zool. Soc. Micropt. supra plumbeo griscscens ; gula scapularibusque rttfes- centibus ; abdomine speculoque alarum albis ; rostro vii'escenti' nigro, ungue nigro. Smaller than M. brachypterus. This bird having a smaller body than the first, is enabled to fly ; which with the scapulars and the feathers of the throat being of a redder hue than those of M. Brachypterus, authorizes its being considered as specifically new. 76. Anas nigricollis. — Ind. Orn. ii. 834. This bird has a wide range on the South American continent It frequents the River Plata, Strait of Magalhaens, and several parts of the Western Coast, as far up as Chiloe.