]0. RrrYTiDocKuos. 383 



Buceros javanicus, Share, Gen. Zool. viii. p. 28 (1811) ; ViciU. N. 



Diet. d'Hist. Nat. iv. p. 59.5 (1816). 

 Buceros niger, Vieill. N. Diet. d'Hist. Nat. iv. p. 592 (1816). 

 Buceros amiulatus, Dumont, Diet. So. Nat. vi. p. 210 (1817) ; 



Drapiez, Diet. Class. Hist. Nat. iii. p. 32 (1828). 

 Buceros javamis, Dumont, Diet. So. Nat. vi. p. 215 (1817). 

 Buceros plicatus, Miill. 8( Sehl. Verh. Ges. Ned. hid. pp. 24, 30 



(1839-44); Graij, Gen. B. ii.p. 399 [part.] (1847) ; Bli/th, Cat. B. 



Mus. As. Soe. p. 45 (1849) ; Hartl. J. f. O. 1859, p. 289 ; Benisf. 



J. f. 0. 1861, p. 113 ; SeJil. Mus. Pays-Bas, i. Buceros, p. 2 (18li2) ; 



Eyton, Ost. Av. p. 60 (1867) ; Scla't. Rev. List Vert. Anim. p. 170, 



fig. 20 (1872) ; Garrod, P. Z. S. 1873, p. 4(i4. 

 llbyticeros plicatus, Iteieh. Si/st. Av. pi. Ix. (1849) ; Bonap. Consp. 



Vol. Anisod. p. 3 (1854) ; Horsf. Sf Moore, Cat. B. Mus. E. Ind. 



Co. ii. p. 598 (1856-58) ; Moore, P. Z. S. 1859, p. 451 ; Godwin- 

 Austen, J. As. Soc. Benq. xxxix. pt. ii. p. 96 (1870) ; Jerd. Ibis, 



1872, p. 5 : Hume, Str. F. ii. p. 470 (1874). 

 Calao (Calao) plicatus, Bonc/p. Consp. Gen. Av. i. p. 90 (1850). 

 Aceros plicatus, Bli/t/i, Cat. Mamm. Sj- B. Burtna, p. 69 (1875). 

 Buceros (Ilhytidoceros) plicatus, var. undulatus, Dubois, Bull. Mus. 



Behj. iii. p. 206 (1885). 

 Buceros pucoran, Blyth, J. As. Soc. Bene/, xii. pt. ii. p. 990 (1843). 

 Buceros pusarau, Blyth, J. As. Soc. Beng. xvi. p. 998 (1847) ; id. 



Cat. B. Mus. As. Soc. p. 45 (1849). 

 Buceros (Rhj'ticeros) pusaran, Tich-ell, Ibis, 1804, p. 180 [part.]. 

 Rhytidoeeros obscurus. Cab. <^ Heine (nee Gm.), Mus. Hein. ii. 



p. 172 (I860) ; Salvad. Ucc. Borneo, p. 85 (1874). 

 Buceros (Rlivticeros) obscurus. Gray, Hand-l. B. ii. p. 129 (1870). 

 Rhyticeros obscurus, Hume, Nests Sf Eggs Ind. B. p. 115 (1873). 

 Aceros plicatus (? Lath.), Blyth, Cat. Mamm. B. Burma, p. 09 



(1875). 



Adxilt male. Top of the head and occiput dark chestnut, shading 

 into black on the back of the neck ; sides of head and rest of neck 

 white, more or less tinged with buff ; rest of plumage black glossed 

 with green, except the tail, which is pure white: naked skin round 

 eye reddish fleshy ; gular skin intense bright yellow, with a broad 

 transverse black band interrupted just at the middle ; iris orange- 

 red ; legs and feet black, inclining to hoary on the back and sides of 

 the tarsus : bill pale horny yellowish white, reddish towards the 

 base, with transverse jilaits on both mandibles ; first plait of the 

 casque reddi.sh ; nine plaits appear to be the limit even in the 

 oldest examples. Total length 42 inches, wing 19'5, tail 12-8, 

 tarsus 2-G. 



Yomuj male, with plaits of casque undeveloped and base of bill 

 smooth, is similar to the adult in other respects. The tail-feathers 

 are sometimes irregularly spotted with black. In specimens with 

 three or four plaits only the plaits ai'e much wider than in tlie 

 older examples. 



Adult female. Entire plumage black except the tail, which is pure 

 white. The back and wings are glossed with dark green. In other 

 points it resembles the male adult, but the gular skin is intense 

 blue instead of yellow. Total length 34 inches, wing 17, tail 11-1, 

 tarsus 2'2. 



