1847.] Proceedings of the Asiatic Society. 997 



tail, and wing-tips, pure white ; the remainder 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." 

 The Society's female has a small black patch on its outermost tail-feather. 

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

 ally long and broad cuneated tail. Colour of the beak and casque dusky, 

 the former laterally whitish towards its base. Throat moderately well 

 feathered. Inhabits the Malayan peninsula and Sumatra. Adult male and 

 female, from Malacca; presented by Mr. E. Lindstedt. 



13. B. exarhcetus, Reinwardt. Size small ; the tail but little graduated : 

 throat but partially feathered. Colour wholly black, glossed on the upper- 

 parts with green : the bill and casque pale, with three deep longitudinal 

 channels or furrows. Inhabits the Moluccas. Specimen presented by the 

 Batavian Society. 



14. B. panayensis, Scopoli. This is an anomalous-looking little species ; 

 and the Society's only specimen accords with Sonnerat's figure, assigned by 

 him as that of the female bird, whereas, from analogy, I think it is more 

 likely to represent the male ; but it differs from that figure in having the 

 throat as well as the cheeks black, (as in B. cavatus and B. hydrocorax,) and 

 in the tail being black at the base as well as tip, with a fulvous- white cross band 

 occupying its subterminal fourth. Au reste, the crown, neck, and under-parts 

 are fulvescent-white, and the upper-parts brown-black, with slight pale 

 margins to the primaries. Casque simple, smooth, compressed and truncate 

 to the front : the upper mandible transversely indented, and marked alter- 

 nately with black and yellow ; the lower with similar furrows, placed much 

 more obliquely. In the other sex, according to Sonnerat, the head and neck 

 are black. Inhabits the Moluccas. Specimen from the former Macao 

 Museum, presented by R. Inglis, Esq. 



In B. comatus, if not also in B. panayensis, a marked dissimilarity of the 

 sexes is observable ; and the same prevails in the three species next in order, 

 which are nearly allied together. These have the throat naked and disten- 

 sible ; with the skin of a bright colour. The first alone has no trace of casque, 

 beyond a slight bulging at the base of its upper mandible. 



15. B. nipalensis, Hodgson : vide XII, 989. Size very large. The female 

 wholly black, except the tips of the wings and tail, which are white : whereas 

 the male has the head, neck, and under-parts, deep ferruginous, passing to 

 maronne on the abdomen and thighs. Young coloured like the adults. 

 Upper mandible with numerous broad transverse channels, each coloured 

 black along its posterior half or more. This great species inhabits the S. E. 



6 n 2 



