256 Messrs. Ogilvie-Grant and La Touche on 
Owl appears to be quite a well-marked insular form peculiar 
to Formosa and may be at once recognised by the heavy 
blackish brown drop-shaped spots on the breast and belly 
and by the much wider buff markings and bars on the inner- 
most scapulars. 
PANDIONIDE. 
136. Panpion waLtaetus Linn. 
Pandion haliaétus Swinh. Ibis, 1863, p. 209; La Touche, 
op. cit. 1898, p. 372. 
The Osprey is probably a resident in North Formosa. 
FALCONIDZ. 
137. Crrcus sprtonotus Kaup. 
Circus spilonotus Swinh. Ibis, 1863, p. 2138, pl. v.; La 
Touche, op. cit. 1895, pp. 326, 337; 1898, p. 372. 
This Harrier winters on the lowlands of Formosa. 
138. +Crrcus £rvuciNosus Linn. 
Circus eruginosus Swinh. Ibis, 1865, pp. 3849, 852; 1870, 
p. Sf. 
Circus, sp. inc., La Touche, op. cit. 1895, pp. 826, 337. 
Circus eruginosus Sharpe, Cat. Birds B. M. i. p. 69 (1874); 
Slater, Ibis, 1895, p. 837; La Touche, op. cit. 1898, p. 372. 
The Marsh-Harrier is common on the plains of Formosa 
in winter. 
139. *LopuHosPiza TRIVIRGATA (Temm.). 
Lophospiza trivirgata Swinh. Ibis, 1866, p. 395. 
Lophospizias trivirgatus Blanford, Fauna Brit. Ind., Birds, 
iil. p. 401 (1895). 
a. g. Kiu-Kong Chin Mt., 5000 ft., March 1906. 
b,c. 2 et 6 imm. Ho Ho Mt., 5000 ft., March 1906. 
gd adult. Iris orange-yellow ; rim of eyelids yellow; bill 
black; cere greenish grey ; gape orange. 
2 adult. Iris deep reddish yellow; bill slate-coloured, 
black at the tip; cere and skin of face greenish; feet yellow, 
nails black. 
& imm. Iris yellow, rim of eyelids ycllow; bill biack at 
