278 On the Birds of the Island of Formosa. 
C. mikadv was founded, I overlooked this specimen; but 
if I am right in surmising that it is the female of C. mikado, 
I have no doubt been correct in referring the male to 
the genus Calophasis. 
The following is a description of the bird :— 
Adult female. Head and neck dark olive-brown, shading 
into dark rufous-brown on the crown and nape, where most 
of the feathers are marked with black; chin and throat pale 
whitish brown; ear-coverts blackish, with white shafts and 
middles; feathers of the mantle and upper back black, 
mottled with rufous-brown, and each with a terminal white 
hastate shaft-spot and olive-brown margin; lower back and 
rump olive-brown, transversely mottled with black and with 
pale whitish buff shaft-stripes ; upper tail-coverts pale sandy- 
brown mixed with rufous, and with irregular wide black bars ; 
feathers of the chest and sides of the body irregularly barred 
and marked with black and white and margined with olive- 
brown ; middle of the breast very similar, but whiter; belly 
and vent greyish brown, barred with black and fringed with 
whitish; under tail-coverts chestnut, widely tipped with white 
and barred with black; primaries and secondaries black, 
barred with pale rufous, the outer secondaries being also 
more or less vermiculated with the same colour; wing- 
coverts and scapulars blotched with olive-brown and black, 
obliquely barred with pale rufous, and with pale whitish 
buff shaft-stripes and tips ; tail-feathers sixteen in number, 
chestnut, barred throughout their entire length with black, 
and with pale sandy-buff speckled with black, all except the 
middle pair being tipped with white. 
Total length ca. 18-0 inches ; wing 7°6 tail 7:5; tarsus 2°3. 
a. 2. Racu Racu Mts., 7000 ft., Feb. 1906. 
On the whole, this is a much darker bird than the female 
of C. humie, with more black bars and narrower white tips 
to the outer pairs of tail-feathers, and with very different under 
parts. From the female of C. ellioti, which it approaches 
in the general markings of the upper parts and in the rufous 
colour of the top of the head, it may be at once recognised 
by the absence of black on the throat and by the heavy 
