-123- Colymbidae. Grebes. Colymbus novae hollandiae, subspecies. N. Cal.: Jouan; Layard; Sarasin, etc. Puffinidae. ?Halobaena coerulea Recorded by Layard. ?Pterodroma incerta (Schlegel). N. Cal.: a downy young in Museum at Leyden, said to have come from New Caledonia, and received from Verreaux, has been identified as this species, but may be something else (see below, under P. rostrata trouessarti.) Pterodroma rostrata trouessarti Brasil. (t.l., N. Cal.) N. Cal.: Verreaux; Layard; Sarasin (2 females and a yg. from Canala, March 7). Layard (Ibis, 1882, 538) writes that this "is the common Petrel of the adjoining seas, breeding on the small rocky islands, and, we believe, also (from what we have heard) on the mountains in the interior. We have received the young birds in several stages of plumage from a small island off the larger island of "Ueu", which is separated from the main island by the celebrated Wodin passage, and forms the southernmost end of New Caledonia. On the 11th of April, 1877, Père Montrouzier sent us nine very young birds in the downy stage," The Layards also got from him a half-fledged young one on Sept. 20. [Pterodroma heraldica (Salvin). Is from the Chesterfield Islands (19° 59' - 19° 37' S., 158° 30' - 158° 13' E.), a group several hun- dred miles w. by n. of New Caledonia, and not included in the present list of Polynesian birds.] Pterodroma mollis (Gould). (t.l., South Atlantic, 20°-40° S) N. Cal.: Layard (Ibis, 1882, 539) says "Breeds in great num- b ers about the summit of Mont Mou, in burrows. The birds and eggs were obtained by Mr. Atkinson on 10th February, 1882." Mathews says Layard did not get adults, and identity is uncertain. Piofinus cinereus (Gmelin). (t.l., Mathews designates Kerguelen Id.) Open sea, off N. Cal.: Layard. Mathews says there are forms of this species, but he can not make them out, as the available material is sea-killed, and not from the breeding grounds.