2. Notes on Birds from Easter Island. 
By 
EINAR LONNBERG. 
The Swedish Expedition stayed only a short time (*°/s—?/7 1917) on this 
island, and a visit to a small islet near the southwestern promontory, Motu 
Nui, could not be extended to more than a couple of hours in consequence of 
bad weather and storm. A few other rocks on which birds nested could not 
be visited at all. A complete investigation of the bird life was therefore im- 
possible. 
F. FUENTES (Contr. al Est. de la Fauna de la Isla de Pascua, Bolet. del 
Mus. Nac. de Chile, 1914) published a list of the birds known to him. Besides 
introduced species, it includes three birds, Gzgzs alba Licht. (= Gygis alba 
royana), Anous caeruleus Gould (= Procelsterna) and A. stolédus var. pileata 
Scop. (probably = unicolor). 
Mr. BACKSTROM collected, however, material of the species enumerated 
below. The natives told him that 12 different kinds of birds live on the island. 
Specimens of the following were secured: 
Sterna lunata 
Gygis alba royana 
Procelsterna caerulea skottsbergil 
Anous stolidus unicolor 
Pterodroma heraldica paschae 
Sula cyanops 
Two more kinds were seen, one of which was a Phaeton (also observed 
by Mr. FUENTES) to judge from the »two long tail-feathers». 
Two kinds of birds have been introduced from Chile, viz. Lezstes supra- 
ciliavzs Bp., which is rare, and WVoloprocta perdicaria Kittl., which is common 
(fide K. B.). 
Sterna lunata Peale 
Motu Nui: 2 dd, 1 &, 78/6 1917. 
Length of wing in males 283 and 272 mm., in the female 274 mm. Length 
of culmen 42—43,5 mm. 
