16 



BIFID-CASQUED HORNBILL. 



Buceros bicornis. B. suhcristatus niger, ahdomine medioque re- 

 7mgiim rectricum albis, rostro Jlavescente, galea concava antror- 

 sum 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. frnnte ossea plana, antrorsum bicorni. Lin. 

 Syst. Nat, 



Buceros bicornis. Lath. ind. orn, 



Philippine Hornbill. Lath. syn. 



Le Calao bicorne. Levaill. Cal. pi. 7. 8. 



Calao avis. Petiv. gaz. t. 3\.f. 1. Buf. 7. p, \5J. 



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. 



