from Western Australia. 203 
of red weeds and the laying of eggs it would be interesting 
to know. Very little skill is necessary to obtain a pleasant 
effect in nest-building among mangroves. The cluster of 
weeds which form the nest measures six inches across and 
four inches in depth, the bowl being a slight depression of 
half an inch. 
That this *^ rookery " has been used for two or more 
years is shown by the guano upon the branches and older 
portions of the nests. While making observations, a bird 
flew at me, and brought blood from my lower lip with its 
bill. 
Q7. Gabianus pacificus. Pacific Gull. (Hall's Key 
p. 90.) / 
Fledgling (about seven days old) . 27.10.99, Houtman^s 
Abrolhos. 
The nest of this species is a slight " mound " lined with 
salt-bush twigs. 
68. Pelagodroma mahina. White-faced Storm-Petrel. 
(Hairs Key, p. 91,) 
A. Sk. ad. S ' 26.10.99. South Island, Pelsart Group. 
Houtman's Abrolhos. 
B. Nestling. 20.10.99. West Wallabi Island. Hout^ 
man's Abrolhos. 
Nestling. — Except the chin and throat, the whole unde^^ 
surface is covered with a sooty-grey down averaging more- 
than an inch in length. The down has fallen from the upper 
surface, excepting the crown and rump. The back is deeper- 
slate-coloured than in the adult, and the wings, which are 
almost free from down, are of the same colour ; the hind- 
neck is mottled with white ; the face is deep slate-coloured ;; 
the lores white with dark tips ; the chin, throat, and cheeks, 
white ; the feet slate-coloured, with a very light yellow mark 
between the toes ; the bill is dark. The bulk appears to be 
twice that of the adult. Girth of nestling at shoulders. 
10*5 inches ; of adult 4*5 inches. 
One nestling, well advanced, I found lying dead above 
the entrance to a burrow and externally uninjured, 24,10.99„ 
