312 Mr. R. Swinhoe on Formosan Ornithology. 
members of the genus Sphenocercus. The female is of much 
the same stature as the male, but not quite so robust, and has 
the wing about half an inch shorter. 
Treron formosce <5 (vera). Upper parts olive-green, brighter 
on the rump and tail, as in the female (in ‘ Ibis/ 1863, p. 396, 
u yellow on the head and rump ” is a misprint for c( yellower on 
the head and rump”). Neck, upper back, face, breast, and 
belly light grass-green, greyest on the second of these, and yel¬ 
lowest on the face and underparts. Crown smeared with 
ochreous-buff. Shoulders and lesser coverts deep chesnut- 
maroon, extending faintly in a broken semicircle across the 
back. Axillaries and under wing leaden-grey. Tibials deep 
green, some of the feathers being broadly margined with prim- 
rase. Centre of the belly also primrose. Under tail-coverts 
extending to within half an inch of the end of the tail, primrose, 
washed with cinnamon, and broadly centred with deep green, 
especially on the more basal feathers. The feathers of the body 
on their hidden parts leaden-grey, white at roots. Legs and 
bill as in female. Quills greyish-black, a few of the outer ones 
edged faintly with greenish, the outer quill being slightly ser¬ 
rated on its outer edge. Outer tertials greyish-black, narrowly 
edged with green and light yellow; the rest of the tertials the 
colour of the back. The primary coverts with more or less 
greyish black, margined with yellow. Tail olivaceous grass- 
green, stemmed with greyish-black; all the rectrices but the 
middle pair broadly margined interiorly with greyish-black, and 
lightly smeared on parts with the same. The rest slightly gradu¬ 
ated, the outermost being *5 inch shorter than the centrals. Tail 5 
inches long, consisting of fourteen rectrices. Total length of bird 
12*5 inches; wing 7*8, the third quill deeply festooned on its 
inner margin about middle of its length. I cannot find anything 
in the ‘ Birds of India 5 like this Pigeon; and I am not suffi¬ 
ciently acquainted with this group to tell if it has a close affine. 
It may perhaps be nearly matched from the Philippines. 
I have a third species of Treron from the Pungshan Mountains, 
but unfortunately only a single female specimen of it. Its dis¬ 
tinctness is marked ; and on account of its cry, which the Chinese 
compare to the Aiv-a shouting of their ladies to summon the 
