80 



BUCERID^. 



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. Shavo, v. viii. 3. pi. 1. — Calao rhino- 

 ceros. Le Vaill. Ois. d'Afriq. v. pi. I, 2. — Bu. niger. Skatv, 

 V. viii. p. 7. — Bu. Africanus. Shavoj v. viii. p. 6. j young. — 

 Isles of Sunda. 



Sp. 2. Bu. monoceros. Sha'w, v. viiu p. S. — India and Ceylon. 

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



Bu. vertice occipiteque castaneis; colloflavo; corpore, alis,Jemo- 



ribusque splendide viridi-nigris ; caudd alba. 

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



yellow J 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 orange-red. 



Sp. 4. Bu. bicornis. Shavo, v. viii. p. 16. — Bu. cavatus. Shaw, 

 V. viii. p. 18.— Sumatra. 



