1898.] ON A SECOND COLLECTION OE BIRDS FROM TONGOA. 
7 
1 Specimen. 
Adult, in worn (summer) plumage; length of Wing, 165 mm.; 
Tail, 64 mm. 
Native name: Siviu. It feeds upon some small crustaceans 
which leap about, amongst the stones on the beach, after the 
waves have rolled over them. 
Puffin us obscurus, (Gmel.) 1788. 
Procellaria obscura , Gmel., Syst. Nat. Ed. XIII, Tom. I, p. 559 
(1788). 
Pufflnus obscurus, Wiglesw., Av. Polyn. p. 79 (1891); Salvin, Cat. B. 
Brit. Mus. Vol. XXV (Fam. Puffinidae ), p. 382 (1896). 
2 Specimens. 
A. Adult male; length of Wing, 210 mm.; Tail, 76 mm. 
The larger tail coverts entirely blackish brown, only one 
or two with faint traces of a white tip. 
B. Young in down. Upper surface a light greyish brown, 
under surface whitish; feet aud bill coloured as in the adult. 
On the New Hebrides, P. obscurus has one of its resorts 
for breeding purposes. During the daytime it lives in holes 
which it digs in the ground far up in the woods, and seeks its 
food during the course of the night. 
According to native accounts it sleeps, resting on one foot. 
They believe that, „ prior to leaving its nest, it places a light 
coloured sponge at the entrance in order to find it again“. It 
is presumed that some five or six individuals inhabit each 
burrow. 
Native name: Ngon-go (or Ngo-ngo). 
Trykt 6te December 1898. 
