Thick-billed Pigeon. 
Tver on orassirostris , Fraser, Proc. Zool. Soc. 1843, p. 35. 
The fruit-eating Pigeons, composing the genus Treron, are distributed throughout Africa, 
India, and the Indian Archipelago. 
The bird, represented on the annexed plate, was procured from one of the islands on the 
western coast of Africa (I believe from that of St. Thomas’), by T. R. H. Thompson, Esq., R.N., 
by whom it was presented to the Society. 
The Treron crassirostris is remarkable for its very stout bill. The general colour of the 
plumage is dark green; the top of the shoulder is vinaceous; the greater and lesser wing-coverts 
are edged with yellow, forming two distinct bands across the wings; the secondaries and primaries 
are also edged with yellow, but in a very slight degree; the primaries are blackish brown; the tail 
is terminated by a broad band of slate colour; the feathers of the vent are chesnut, terminated 
with yellow; the under tail-coverts are of a reddish-brown colour, tipped with pale yellow; the 
basal portion of the under surface of the tail is black. The bill is lead-coloured; the cere is 
bright red ; the feet are yellow; the nails are lead-coloured. 
Total length, twelve inches. 
