80 buceridte. 



of them are endowed ; but this method is objection- 

 able, inasmuch as the younger birds have always a 

 simple beak, and the form of the casque varies with 

 the age of the bird. They all inhabit the old world. 



Sp, 1. Bu. rhinoceros. S/iaiv, v. viii. p. 3. pi. 1. — Calao rhino- 

 ceros. Le Vaill. Ois. d' Afriq. v. pi. \, 2. — Bu. niger. Shaw, 

 V. viii. p. 7 . — Bu. Africanus. S/iatv, v. viii, p. 6. ; young. — 

 Isles of Sunda. 



Sp. 2. Bu. monoceros. Shatv, v. viii. p. 8. — India and Ceylon, 



Sp. 3. Bu. cassidix. Temm. PL Col. 210. 



Bu, vert ice occipiLeque castaneis; collojlavo; corpore, alis,Jemo- 



ribusque splendide viridi-nigris ; caudd alba. 

 Hornbill witli the top of the head and occiput chesnut ; the neck 



yellow 5 the body, wings, and thighs glossy green-black; the 



tail white. 



Inhabits the island of Celebes. Length three 

 feet and a half; beak nine inches, very large, bright 

 yellow, furnished at its base with a horny purple- 

 red casque, which is transversely wrinkled, nearly 

 semicircular, broad at the base, and cut off anteriorly, 

 and resembling a crest ; both sexes are thus provided. 

 The adult male has the top of the head and part of 

 the occiput of a marron colour : all the neck is bright 

 golden yellow : the body, wings, and thighs are of a 

 glossy metallic green-black : the tail is pure white : 

 the space round the eyes and the skin on the throat 

 are livid yellow, tinged with bluish : a dusky band 

 extends from the latter to the angles of the beak : 

 the irides are orans:e-red. 



'ft" 



Sp. 4. Bu. bicornis. Shatv, v. viii, p. IG. — Bu. cavatus. S/iaiv, 

 V. v'lii.p. 18. — Sumatra. 



