AVES PROCELLARIID^. 1 1 9 



Tail, 2.7 inches. 



Color. Adult Male. — General color above, greyish black ; darkest 

 anteriorly, lightest posteriorly. Below pure white except on the neck, the 

 under tail coverts and the flanks. 



Head : Dark greyish black. 



Neck : Above and below dark greyish black. 



Back : The same shade as the head but increasingly greyer, the feathers 

 on the lower back and rump, edged with -greyish-white. The upper tail- 

 coverts are ashy, edged with whitish. 



Wings : Black. The median coverts are ashy and edged with whitish. 



Tail : Ashy grey, each feather broadly tipped with black forming a 

 terminal band. 



Under parts : Chest, neck and throat dark greyish black, which termi- 

 nates abruptly in pure white on the breast. This white prevails on the 

 rest of the under parts. The flanks and sides are shaded or streaked 

 with grey. 



Bill : Black. Iris brown. 



Legs : Black. 



Feet: Dusky. 



The female is similar in size and color to the male. 



Geographical Range. — Falkland Islands, Kerguelen Island and the 

 Southern Ocean, New Zealand and Australian Coasts. 



This petrel was not obtained by the Princeton Expeditions. The 

 description is based on the material representing the species in the British 

 Museum of Natural History. 



"In this Society's Proceedings for the year 1840, the late Mr. Gould 

 described a 'beautiful fairy-like' new species of Stormy Petrel from 

 Bass's Straits, which he called Thalassidroma nereis (tom. cit. p. 178), 

 under which name it is figured in the last volume of the 'Birds of Aus- 

 tralia.' 



"Dr. Elliott Coues, in his revision of the family Procellariidas, treating 

 of the species under the name Procellaria nereis, says : ' I have had the 

 pleasure of examining Mr. Gould's types of this species from Bass's Straits, 

 Australia, now in the collection of the Philadelphia Academy. It is a beau- 

 tiful little species, quite unlike any other known Stormy Petrel. In form it 



