384 PETRELS AND SHEARWATERS 



of the abdomen. The sexes are alike, and there is no seasonal change of coloration. 

 Length 17 in. [431 mm.]. The upper parts are of a light brown, and each feather 

 has a marginal fringe of ashy brown. The remiges and rectrices are black, and 

 the hinder upper tail-coverts are white. The lower part of the side of the head 

 is white, as are the fore-neck and under parts, save the under tail-coverts, which 

 are sooty brown. The beak is yellowish green ; the iris dark brown ; the feet 

 light greenish grey, while the webs of the toes are flesh-coloured. The juvenile 

 dress is like that of the adult. The young in down are unknown, [w. P. P.] 



2. Distribution. The only known breeding-place of this species is Inac- 

 cessible Island, in the Tristan d'Acunha group, but in all probability other sites 

 will be discovered when the islands of the Southern Hemisphere are more thoroughly 

 explored. Its breeding season is during our winter months, and on migration 

 during our summer it visits the North Atlantic, ranging north to the Norwegian 

 coast, the Fseroes, Iceland, Greenland, and the Labrador coast. [F. c. R. j.j 



3. Migration. A fairly regular visitor to the seas round the British Isles, 

 but seldom coming near land, and therefore rather irregularly recorded. The 

 season when it most frequently occurs is from August to November, and the species 

 is to be regarded as a native of the Southern Hemisphere (known to nest in the 

 Tristan d'Acunha group, and supposed to do so on other southern islands), " winter- 

 ing " in our summer. In some seasons it is found in considerable numbers from 

 August onwards off Cornwall and the Scilly Isles, and it is said to remain in the 

 seas round the latter (never coming among the islands) " during autumn and winter " 

 (cf. Saunders, III. Man. British Birds, 2nd ed., 1899, p. 737 ; and Clark and Rodd, 

 Zoologist, 1906, p. 346). It has once been recorded in Kent, on 29th October 1890, 

 and several times in Norfolk and Suffolk, once as late as 10th November (cf. Gurney, 

 Zoologist, 1891, p. 274 ; and Saunders, loc. cit.). Many have been seen off Flam- 

 borough Head in September, but apart from this locality it is an infrequent autumn 

 and winter visitor to Yorkshire ; but it has been recorded from 18th July to 

 December, and once on 10th January (cf. Nelson, B. of Tories., 1907, pp. 752-5). 

 One was found dead in Skye on 13th July 1885, and the species has been noticed 

 off Tiree, St. Kilda, and several of the other western and northern Scottish isles, 

 while many frequent the fishing-banks near Rockall (cf. Saunders, loc. cit.). From 

 forty to sixty pairs were seen on the water between the Butt of Lewis and North 

 Rona on 27th June 1894, and over fifty pairs between Barra Head and St. Kilda 

 on 24th June 1895, while specimens were killed in the same region in the fourth 

 week of July 1899 (cf. Newton, Annals Scot. Nat. Hist., 1900, pp. 142-7). One was 



