32 BONTIAN HORNBILL. 



of the head: cheeks and throat black, edged with 

 grey: remainder of the bird brown, but the quills 

 black, and the breast and belly blackish mixed with 

 grey: tail even at the end, eight inches long, and 

 white. Native of the Molucca isles: said to feed 

 much on nutmegs: is kept in houses and rendered 

 domestic, on account of its services in destroying 

 rats and mice. 



On collating Mr. Levaillant's plate of his Calao 

 a casque concave or Concave-Casqued Hornbill in a 

 young state with that represented in the Planches 

 Enluminees, belonging to the present species, I 

 cannot avoid entertaining a strong suspicion that 

 the Bontian Hornbill just described is in reality 

 no other than the Concave-Casqued Hornbill in its 

 first year's plumage. Mr. Levaillant himself is 

 perfectly convinced of this, and justly complains 

 of an unnecessary multiplication of species in the 

 present genus. 



