in 



PROCELLARIIDAE 65 



and bill, and near the eye ; D. immutabilis, found from Laysan to 

 Japan, is darker, with white head, neck, rump, base of tail, and 

 lower parts ; D. melanophrys, of the southern oceans, which has 

 occurred in California, and in summer in England as well as at the 

 Faeroes, 1 is white, with a blackish band on each side of the eje,_ 

 slaty back, brownish-black wings, and grey tail ; D. lulleri, of the 

 New Zealand seas, is greyish -brown, with white rump and lower 

 surface, and ashy or whitish head ; D. culminata and D. chloro- 

 rhyncha, of the southern oceans, D. cauta of Tasmania, D. salvini 

 of the New Zealand Seas, and D. layardi of those of the Cape, 

 have similarly coloured plumage ; the last five being distinguished 

 by some writers as Thalassogeron, and having a strip of naked 

 skin between the plates of the maxilla towards its base. D. bulleri 

 has red, D. clilororhyncha flesh-coloured, and the others yellow 

 feet ; the amount of yellow on the bill varying with the species. 



Sub-fam. 2. Oceanitinae. The genera recognised are Cymo- 

 droma, Pealea, Pelagodroma, Gfarrodia, and Oceanites ; they are 

 sooty- or slaty-black birds, of small size, having in some cases the 

 rump, under parts, nuchal collar, forehead, superciliary streaks, or 

 margins to the feathers of the dorsal region white. Their range 

 extends over different portions of the southern seas, whence 

 Oceanites oceanicus, Wilson's Petrel, has strayed to Labrador and 

 Great Britain, and Pelagodroma marina to the latter and Massa- 

 chusetts, while breeding in the Salvage Islands south of Madeira 

 and the Cape Verds. The habits do not seem to differ appreciably 

 from those of the Storm-Petrel. 2 



Sub-fam. 3. Procellariinae. As here arranged, this com- 

 prises three groups typified by the Fulmars, Shearwaters, and 

 Storm-Petrels respectively. Of the first, Ossifraga gigantea, the 

 Giant Petrel, or " Nelly " of the southern seas, recorded also from 

 Oregon, is dark brown, often with white on the head when 

 immature, and sometimes almost entirely white. Fulmarus 

 glacialis of the North Atlantic, the Fulmar of St. Kilda, and the 

 true Mollymauk of sailors, which is represented in the North 

 Pacific by the barely separable F. glupischa and F. rodgersi, 

 is bluish-grey with dusky quills, white head, neck, and lower 

 parts ; the dark phase being uniform dusky grey. It is smaller 



1 Har vie -Brown, Zoologist, 1894, p. 337-338. 



2 Eaton, Phil. Trans, clxviii. 1'879, pp. 129-134 ; Ogilvie Grant, Ibis, 1896, 

 pp. 51-53. 



VOL. IX F 



