"This beautiful bird greatly resembles the purple Gallinule in shape and make, but is much superior in size, being as large as a dunghill fowl. The length from end of bill to that of the claws is two feet three inches. The bill is very stout, and the colour of it, the whole of the top of the head and the irides red; the sides of the head round the eyes are reddish, very thinly sprinkled with white feathers; the whole of the plumage is, without exception, white. The legs the colour of the bill. This species is pretty common on Lord Howe Island, Norfolk Island, and other places, and is a very tame species. The other sex, supposed to be the male, is said to have some blue on the wings." Gray states under _Porphyrio alba_, in Ibis 1862, p. 214: "It is stated that a similar kind was found on Lord Howe Island which was incapable of flight. The wings of the male were beautifully mottled with blue." Dr. H. O. Forbes, in the Bulletin of the Liverpool Museums, Vol. III, No. 2, pp. 62-68 (1901), gives an exhaustive account of Rowley's type, in which he comes to the conclusion that the bird is not a _Porphyrio_ but a _Notornis_, and that it is also probably a specimen of _Notornis alba_. That it is a _Notornis_ I equally believe; but I think the length of the wing-coverts in the type of _N. alba_, puts it out of the question that the two birds could be the same. Moreover, the two original pictures of Phillip and White show this difference of the wings very well. I have therefore kept the two separate, and I feel sure if we had other specimens with exact data we should find this a parallel case to that of _Nesonetta aucklandica_ of the Auckland Islands and _Anas chlorotis_ of New Zealand, and that _Notornis alba_ of Norfolk Island was a still further degenerate form to the already flightless _N. stanleyi_ of Lord Howe Island. Wing nine inches. Habitat: Lord Howe Island. {144} NOTORNIS ALBA (WHITE). (PLATE 33.) ? _White gallinule_ Callam, Voy. Botany Bay (1783?) (teste Gray). _Fulica alba_ White, Journ. Voy. N.S.W., p. 238 and plate (1790). _Gallinula alba_ Latham, Ind. Orn. I, p. 768 (1790). _Porphyrio albus_ Temminck, Man. d'Orn. II, p. 701 (1820). _Porphyrio melanotus var. alba_ Gray, Voy. Ereb. and Terror, Birds, p. 19 (1844). _Porphyrio melanotus_ Gray, Voy. Ereb. and Terror, Ed. II (1846), p. 14. _Notornis ? alba_ Pelzeln, Sitz. k. Akad. Wiss. Wien. XLI, p. 328 (1860). _Notornis alba_ Salvin, Ibis 1873, p. 295, pl. X.