451 



A single specimen of the female obtained at Malacca. 



In this species the adult males have the finely plumed head, neck, 

 breast, abdomen, tail, and tips of the wings pure white ; the remainder 

 being black, a little tinged with brown upon the back : whereas the 

 females have the neck, breast, and abdomen, also black. Raffles 

 described the young male only with " back, wings, and tail, of a 

 dark brown ; the belly of the same colour, mixed with white ; and 

 the wing- and tail-feathers all tipped with white at their points." 

 Colour of the beak and casque dusky, the former laterally whitish 

 towards its base. Throat moderately well feathered. 



Size rather large, intermediate to B. pica and B. rhinoceros, with 

 proportionally long and broad cuneated tail. 



Inhabits the Malayan Peninsula and Sumatra. 



135. Rhyticeros plicatus. 



Buceros plicatus, Lath. Ind. Orn. i. p. 146 (Levaillant, Ois. d'Afr. 

 t. 239 d). 



Rhyticeros plicatus, Reichenbach, Syst. Av. (1849) ; Moore, 

 Catal. Birds Mus. E. I. C. ii. p. 598. 

 Calao plicatus, Bonap. C. G. Av. p. 90. 

 Buceros obscurus, Gmelin. 



Buceros undulatus, Shaw (Levaill. Ois. d'Am. et Ind. t. 20, 21 $ ) ; 

 Horsfield, Trans. Linn. Soc, xiii. p. 175. 



Buceros javanicus, Shaw (Levaill. Ois. d'Am. et Ind. t. 22, jun.). 

 Buceros jav anus et niger, Vieillot. 

 Buceros annulatus, Drapiez. 



Buceros pusar an, Raffles, Trans. Linn. Soc. xiii. p. 293 ; Blyth, 

 J. A. S. Beng. xii. p. 990 ; xvi. p. 998. 



Wreathed Hornbill, Lath. Syn. i. p. 358. 



Adult and young male and female obtained at Pinang. 



" Male with the medial part of the crown and the whole occiput 

 and nape dark rufous bay, or deep marronne, and the sides of the 

 head and neck, with the front of the latter glistening yellowish- 

 white ; all the other parts are greenish-glossed black, except the tail, 

 which is bufly- white. Bill yellowish- white, the basal portion of 

 both mandibles dark reddish-brown laterally, with a series of narrow 

 transverse, whitish ridges, nearly similar to those of Rhyticeros 

 cassidix ; the casque is scarcely elevated above the outline of the 

 rest of the upper mandible, but is broad and flat above, having a 

 series of narrow transverse plaits, the intervals between which are 

 nearly filled up with a brownish substance, so that the profile is 

 almost even, and towards the front is quite so. Length above 3 feet j 

 of wing 19 inches ; tail 10| inches ; bill to gape 7\ inches, and with 

 casque 3 inches high, the latter nearly 2 inches broad." 



" The female has the head and neck also black, and is smaller in 

 size. In the full-grown young, the lateral ridges of the bill do not 

 appear," remarks Mr. Blyth, "till after three or four corrugations 

 are exhibited on the casque, prior to which the bill much resembles 

 that of B. nipalensis Hodgs., of corresponding age, except that the 

 bulge in place of the casque is more decided." 



