388 
et ventris lateribus lineis nigris transversim fasciolatis : uro- 
pygio cum cauda eneo-nigricante : alis albis, primariis obscure 
fusco-nigris, tectricibus majoribus et scapularibus cinerascenti- 
Suscis, illarum pogoniis externis extus lete eneo-viridibus : 
rostro nigro, pedibus nigris, extus sordide aurantiacis. 
Long. tota 17:0, alee 13, caudze 4°75, tarsi 2°4, rostri a rictu 1°3. 
Hab. In ins. Falklandicis (Pack). 
Mus. Brit., ex expeditione Antarctica. 
This Goose, of which the Society now possesses living specimens 
of both sexes, is most nearly allied to the Ashy-headed Goose (Chloé- 
phaga poliocephala), which has likewise been called Bernicla inornata 
by Mr. G. R. Gray, and is figured under that name in his ‘ Genera of 
Birds,’ pl. 165. As in the Ashy-headed Goose, the male and female 
of the Ruddy-headed Goose (as I propose to term this bird) are co- 
loured alike. The bird described as “ Anas inornatus, mas,” by 
Capt. King (Proc. Comm. Zool. Soc. i. p. 15), which is now in the 
British Museum, is decidedly different, in my opinion, from both 
Chloéphaga poliocephala and C. rubidiceps, most nearly resembling 
the male of C. magellanica, but being much smaller. The bird 
described as ‘‘ Anas inornatus, feem.,” by Capt. King, is probably 
C. poliocephala. Specimens of this latter bird in the British Museum 
are from the island of Chiloe, and it appears to be the western re- 
presentative of the present species. 
Chloéphaga rubidiceps may be easily distinguished from C. polio- 
cephala by the following characters :—The whole head and neck, 
which are ash-coloured in the latter, are, in the former, of a uniform 
buffy rufous: the transverse lineations on the body are much 
coarser and more numerous in C. rubidiceps, and the ground-colour 
is pale ochraceous rufous instead of deep chestnut. In C. polio- 
cephala the belly is pure white, in C. rubidiceps it is deep rufous, 
and the sides of the belly are barred with pale rufous and black in- 
stead of white and black. The wings are coloured alike in the two 
species, and the rump and tail in both is of a uniform black, with 
dull greenish reflections. The under tail-coverts in both are reddish- 
brown, rather darker in C. rubidiceps. In both species the bill is 
black, and the legs black, with the outside of the tarsus and outer 
edge of the toes orange, giving them a singular parti-coloured ap- 
pearance in the living bird. The size, dimensions, and general 
characters are, as nearly as possible, the same in both species. 
29. BERNICLA ANTARCTICA (Gm.).— Anas antarctica, Gm. ; 
Darwin, Zool. Beagle, ili. p. 134 ; Cassin in Gilliss’s Exp. ii. p. 200. 
pl. 23 (det? ). 
Falkland Islands (Darwin, Ant. Exp., Pack). 
30. Cyenus NIGRICOLLIS (Gm.).—Anas nigricollis, Gm. 
Falkland Islands (Pack). 
31. Cyenus coscorosa (Mol.).— Anas coscoroba, Mol.— Cygnus 
anatoides, King. 
Falkland Islands (Pack). 
