_Chaunoproctus Bonaparte_, Consp. Av. I p. 526 (1850).
The genus _Chaunoproctus_ contains only one species, which is characterized
by its enormous bill, the depth of the mandible being greater than the
distance between the nasal apertures. The cutting-edge of the maxilla is
nearly straight, and there is no tooth in the posterior half of the
maxilla. The total length is about seven to eight inches. The adult male
has red in the plumage, the female is brown, above and below.
Dr. Hartert (Vögel pal. Fauna I, p. 115) is of opinion that this bird is
connected with _Carpodacus_ and allies, and not with the Greenfinches and
Hawfinches, among which it is placed in the Catalogue of Birds in the
British Museum.