the Birds of the Island of Formosa. 277 
Formosa, but appears to be rare towards the north of the 
island. 
259. +PHasianus rorMosaANus Elliot. 
Phasianus torquatus Swinh. (nec Gmel.) Ibis, 1863, p. 401 ; 
1866, p. 404. 
Phasianus formosanus Elliot, P. Z. 8.1870, p. 406 ; Swinh. 
op. cit. 1871, p. 398; Grant, Cat. Birds B. M. xxii. p. 333 
(1893) ; La Touche, Ibis, 1895, p. 338; 1898, p. 373; 
Grant, Hand-b. Game-B. ii. p. 27 (1897). 
The Formosan Ring-necked Pheasant is peculiar to the 
island, and is generally distributed on the plains and lower 
hills, 
260. *CaLoPHAsIs MIKADO Grant. 
Calophasis mikado Grant, Bull. B. O. C. xvi. p. 122 
(1906). 
a. |g] Middle pair of tail-feathers. Mt. Arizan, Central 
Formosa. 
This species was founded on the middle pair of tail- 
feathers of a Pheasant which inhabits Mt. Arizan, Central 
Formosa. 
The feathers, which are shaped like the middle tail-feathers 
of C. humie (Hume), are black, crossed by about twelve 
narrow grey bands, about 1°5 inches apart. They are very 
different from the tail-feathers of any known species of 
Pheasant. They are incomplete at the base, but measure 
about 18-0 inches. 
Mr. Goodfellow writes :—“I found these feathers in the 
head-dress of a savage, who had come to carry our baggage. 
He said that he had killed the bird on Mt. Arizan and that it 
was rare.” 
Hab. Mount Arizan, Central Formosa. 
[On the Racu Racu Mountains Mr. Goodfellow also pro- 
cured a female Pheasant of an unknown species, which is 
almost certainly referable to my Calophasis mikado, for it is 
most nearly allied to the female of C. humie and more 
distantly to that of C. elliott (Swinh.). 
When describing the two middle tail-feathers on which 
