134 ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 



obscure fulvo late marginatd; genis gutture, corporeque infra flavescentibus ; rostro 

 rubro ; pedibus viridescenti-flavis. 



Long. tot. 9 uno. ; alee, 51; caudce, 21; tarsi, 1% ; rostrio, i. 



Habitat, Ascension Island, Atlantic Ocean. (July.) 



This specimen was killed with a stick near the summit of the Island. It 

 was evidently a straggler, which had not long arrived. There is no aboriginal 

 land bird at Ascension. 



Order— PALMIPEDES. 



Anser melanopterus. Eyton. 

 Anser melanopterus, Eyton, Monog. Anatidas, p. 93. 

 Plate L. 

 Captain FitzRoy purchased a skin of this fine goose at Valparaiso, which he 

 has presented to the British Museum. There is another specimen at the Zoologi- 

 cal Society, which Mr. Pentland procured from the lake of Titicaca, in Bolivia. 



Chloephaga Magellanica. Eyton. 



Anas Magellanica, Gmel. Syst. i. 505. 



Chloephaga Magellanica, Eyton, Monog. Anatidre, p. 82. 



Bernicla leucoptera, Less. Trait d'Ornith. 627. 



This goose is found in Tierra del Fuego, and at the Falkland Islands ; at the 

 latter it is common. They live in pairs and in small flocks throughout the interior 

 of the island, being rarely or never found on the sea-coast, and seldom even near 

 fresh-water lakes. I believe this bird does not migrate from the Falkland Islands ; 

 it builds on the small outlying islets. This latter circumstance is supposed to be 

 owing to the fear of the foxes ; and it is perhaps from the same cause, that 

 although very tame by day, they are much the contrary in the dusk of the 

 evening. These geese live entirely on vegetable matter ; they are called by the 

 seamen, the " upland geese." Mr. Eyton, in his excellent Monograph on the 

 Anatidae, has described the trachea of this bird, which I brought home in spirits. 



Bernicla Antarctica. Steph. 



Bernicla antarctica, Steph. Sh. Zool. xii. 59. 



Eyton, Monograph, p. 84. 



Anas Antarctica, Gmel. Syst. i. 505. 



This goose is common in Tierra del Fuego, the Falkland Islands, and on the 

 western coast, as far north as Chiloe. It is called by the sailors the " rock goose," 

 as it lives exclusively on the rocky parts of the sea-coast. In the deep and retired 



