ft.f?" 



I 





on the Lawas River, whence specimens were sent to London by both Governor Ussher and Mr. 

 Treacher, the acting Governor of Labuan. 



Male.— Bill and casque yellowish white, excepting the base of the bill and patches on the 

 anterior portion and posterior terminus of the casque, which are black. Casque about as high as 

 the bill, narrow for its whole length, and terminating abruptly anteriorly at about two thirds the 

 length of the bill. The black on the anterior end of the casque extends onto the maxilla. TJnder- 

 parts, about three inches of the tips of the primaries and secondaries, together with the whole of 

 the lateral tail-feathers, pure white. Rest of plumage black with a purplish gloss. Space around 

 the eyes white, tinged with blue at the margins. Iris red-brown. Feet lead-colour. 



Total length 29 inches, wing 11 J, tail 12^, tarsus 1 \ ; length of bill h\ inches, length of casque 

 5, height of casque \\. 



There is no difference in the plumage of the sexes ; but the posterior end of the casque of the 

 female is yellowish. 



Specimens described and figured are in my own collection. 



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