16 



BIFID-CASQUED HORN BILL. 



Buceros bicornis. B. subcristatus niger, abdomine medioque re- 



migum fy rectricum albis, rostrojiavescente, galea concava antror- 



fum bicorni. 

 Slightly- crested black Hornbill, with abdomen and middle of the 



wing and tail-feathers white, yellowish bill, and concave casque 



with two-horned front. 

 Buceros bicornis. B. fnmte ussea plana, ant rorsum bicorni. Lin. 



Syst. Nat. 



Buceros bicornis. Lath. ind. orn. 

 Philippine Hornbill. Lath. ayn. 

 Le Calao bicorne. Lcvaill. Cal. pi. /. 8. 

 Calao avis. Petiv. gaz. t. 31 ./. 1. Ruff. 7. p. 157- 



SIZE of a female Turkey, but of a more slender 

 shape : colour black, slightly glossed with blue, 

 the upper part of the breast, belly, thighs, and 

 vent-feathers white: the base of the larger wing- 

 feathers, except of the two exterior ones, of the 

 same colour, forming a white patch on each wing: 

 the tail crossed in the middle, except on the two 

 middle feathers, by a white bar. The bill is as 

 large in proportion as in the Rhinoceros Hornbill, 

 and is of a yellowish colour, with a very large 

 casque, longitudinally hollowed above, and termi- 

 nated in front by two lengthened hornlike pro- 

 cesses : the base of both mandibles, and the back 

 of the casque edged by a bar of black. It is ob- 

 served by Levaillant that Willoughby and Petiver 

 in their descriptions of this species say that there 

 is only a single white feather on each side the tail, 



