392 Mr. R. Swinhoe on Formosan Ornithology. 



Testes small and ovate. Stomach heart-shaped, having a some- 

 what three-lobed appearance, j'q in. long, ^*j broad, ^\^ deep, not 

 very muscular ; epithelium moderately thick, deeply and closely 

 furrowed with rugse, and filled with minute white larvse. In- 

 testines about 9 inches long, from Y^,y to ^,) thick, with no caeca. 

 The bill of this, as indeed of all species of Woodpeckers, is 

 valued by the Chinese for medicine. The name applied to the 

 whole group by the Amoy Chinese is Tok-chew, or Wood-tapper. 



105, CeNTROPUS VIRIDIS. 



Cuculus viridis, Scop. 



C. lepidus et C. affinis, Horsf. 



Chinese name. Bang-king. 



This is the common and only Crow Pheasant of Formosa. It 

 abounds throughout the plains and lower hill-ranges of the 

 entire island. It is subject to three stages of plumage : — that of 

 the first year, when the upper parts are light rufous, banded 

 with black, the bands on the tail being broader and tinged 

 with green, the throat and under parts being white, washed 

 here and there with rufous ; that of the second year, when the 

 upper parts are brown, streaked chiefly along the shafts with 

 light ochreous, the long upper tail-coverts being closely barred 

 with greenish black and rufous ochre, the tail being greenish 

 black, more or less washed with rufous, the wings rufous more 

 or less washed and barred with brown, and the under parts light 

 buff, streaked along the shafts with paler, and ban-ed and mottled 

 with brown; and that of the third year, or adult plumage, 

 when the bill, from a light colour, has become black, the head, 

 neck, lower back, rump, tail, and entire under parts (except the 

 axillaries, which are still rufous) glistening with dark green, and 

 sometimes with purple, the centre of the back, the wings, and 

 the scapulars being rufous, many of the feathers of the latter 

 and the tertiaries having pale ochreous streaks along their shafts. 

 But the period of change is so inconstant, that at the same 

 season you can procure specimens in almost every plumage and 

 almost every intermediate stage of change. The males are 

 generally much larger than the females ; but size is in this bird 

 exceedingly variable, scarcely two being found to have the same 



