Thick-billed Pigeon. 



Treron crassirostris, 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. 



