1897.] The Origin of the Galapagos Islands. 885 
2. Chrysænas victor Gould. Fiji Islands: Bua, Vanua Levu, 
Taviuni, Nyami, Lanthala. 
3. Chrysænas viridis Layard. Fiji Islands: Kandavu. 
Drepanoptila Bonaparte, 1855. 
This genus with the single species Drepanoptila holosericia 
Temm. & Knip. is confined to New Caledonia, with the Isle of 
Pines.” 
The geographical distribution of these genera is very inter- 
esting. 
Ptilopinus. The Moluccas have two peculiar species con- 
fined to different islands; Northern Australia has one, and 
Eastern Australia with the Island of Torres Strait another 
peculiar species. Seventeen species are found on the following 
islands: Solomon I., New Caledonia, Loyalty I., New Hebrides, 
Santa Cruz Islands, Fiji, Tonga, Samoa, Savage Island; Rara- 
tonga, Society Islands; Austral group: Island of Rapa; Pau- 
motu group: Island of Carlsoff; some Island of Paumotu 
group; Marquesas; Pelew; Eastern Carolines: Ruck group: 
Kushai; LadroneIslands. Of these 17 species, 15 are confined 
to special islands. This fact and the differentiation of the 
genus Chrysoenas restricted to Fiji Islands, into three peculiar 
species confined to special islands, and Drepanoptila with a 
single species on New Caledonia shows that these many islands 
were not stocked by immigrants, but that they were formerly 
connected to form a continent. 
The genus Alectroenas G. R. Gray, 1840, which belongs to 
the subfamily Ptilinopodine is confined to the Madagascarian 
region.” There are four species: 
1. Alectroenas madagascariensis Linn. Madagascar with Nos- 
sibe Isl. 
2. Alectroenas nitidissima Scop. Mauritius. 
3. Alectroenas sganzini Des Murs. Comoro Islands. 
4. Alectroenas pulcherrima Scop. Seychelles Islands. 
This again shows the close relationship between the Mada- 
gascarin and the Indo-Pacific region, which, as we have seen 
before, can only be explained by former land connection. 
“ Salvadori, 1. c., p. 158-160. 
“ Salvadori, 1. c., p. 160--165. 
