418 CLASS AVES. 



17, 18. B. Manillensis. Enl. 891, may be the 

 young, the B. Enleirostris. Wagler. 



Greenish-black, above, changing into blue in different 

 lights ; under parts, more dusky ; feathers of neck, 

 elongated. Isle of Panay. 



Striped-tailed or Angola Hornhill. (B. Fasciatus.) 

 Vaill. Af. 233. B. Melanoleucus. Vaill. 



Tail, with alternate black and white bands. Africa. 



Plowed Hornhill. (B. Exaratus.) Col. 211. 



Blackish green, all over ; prominence channelled lon- 

 gitudinally ; feathers of the head, long. Celebes. 



Hornbills without a prominence on the biU. 



B. Javanicus. Vaill. Cal. 22, the young male. 

 Id. Ap. 230, old male, the same as the Col. de 

 TWaidjiou. Labill. Voy. B. Undulatus. Shaw. VaiU. 

 Col. 20 and 21, are the females. B. ErytlirorynchoSy 

 Enl. 260. Vaill. Af. 238, the young. 



B. Hastatus. Cuv. Enl. 890. VaiU. 236 and 237. 



Bill, much arched; greyish, above; each feather 

 edged with white. Senegal. 



Crowned Hornhill. {B. Coronatus.) Shaw. Vaill. 

 Af. 234 and 5. 



White band from the comer of the eye passing round 

 the back of the head. South Africa. 



(B. Bengalensis.) Vaill. Cal. 23. 



Bill, smooth, large; black -brown; wing, blue-grey; 

 coverts, black tipt. Ceylon. 



