3. DICHOCEROS. 355 



3. DICHOCEROS. 



Type. 



Dichoceros, Glof/er, Hand- n. Hilfsb. p. 335 (18J2) D. cavatus. 



Homraiiis, Bonap. Con&p. Vol. Anisod. p. 2 (1854) D. bicoiiiis. 



Bill very large, stout, and curved ; casque large, subquadrate, 

 covering the basal two-fifths of the culmen and extendang two 

 inches behind the ej-e, convex behind, concave in front, and rising 

 on either side into a square corner at right angles to the culmen ; 

 sides of throat naked ; tail-feathers subeqiial, with a broad sub- 

 terminal black baud ; crest of hairy feathers fairly developed ; size 

 very largo. 



Mange. Indo-Chinese Countries, Malayan Peninsula, Sumatra. 



1, Dichoceros bicornis. 



Jje Calao des Philippines, Briss. Orn. iv. p. 5G8 (1760) ; Buff. Hist. 



Nat. Ois. vii. p. 157 (1780). 

 Philippine Horn bill, Lath. Gen. Syn. i. p. 345 (1781). 

 Le Calao a casque concave, Levaill. Hid. Nat. d'Ois. VAmir. i. 



p. 10, pis. iii., iv., & V (1801). 

 Le Calao bicorne, Levaill, Hist. Nat. d'Ois. TAmer. i. p. 16, pis. 



vii. & viii. (1801). 

 Buceros bicornis, Linn. S. N. i. p. 153 (1766) ; Forst. Ind. Zool. 



p. 40 (1781) ; Gm. S. N. i. p. 358 (1788) ; Lath. Ind. Orn. i. p. 142 



(1790); Shaw, Gen. Zool. viii. p. IG (1811); Vieill. N. Diet. 



d'Hist. Nat. iv. p. 597 (1816) ; Merrem, Ersch u. Gniher, Encycl. 



xiii. p. 283 (1824) ;' Te^nm. PI. Col. ii. sp. 4 [text] (1824) ; Wagl. 



Si/st. Av. Buceros, no. 5 (1827) ; Less. Trnite Orn. p. 254 (1831) ; 



Miill. 8f Schl. Verh. Ges. Ned. Ind. p. 27 (1839-44) ; Gray, Gen. 



B. ii. p. 399 (1847); Bonajj. Con-sj). Gen. Av. i. p. 89 (1850); 



Hartl. J. f. O. 18.59, p. 288; Baker, J. As. Soc. Beng. p. 292 



(18.59) ; Sclat. Wolfs Zool. Sketch, 2ud ser. pi. xxix. (18(.il) ; Schl. 



Mus. Pays-Bas, i. Buceros, p. 3 (1862) ; Gray, Hand-l. B. ii. 



p. 127 (1870); Blanf. Ibis, 1870, p. 466; Garrod, P. Z. S. 



1873, p. 464; Elliot, Ms, 1877, p. 416. 

 Dichoceros bicornis, Gloy. Hand- u. Hilsfb p. 335 (1842) ; Cab. S^- 



Heine, Mus. Hein. ii. p. 173 (1860) ; Hume, Nests ^ Eyys Ind. B. 



p. 112 (1873) ; Hume, Str. F. ii. p. 470 (1874) ; Blyth,J.As. Soc. 



Beng. p. 68 (1875); Wardlaw-Ramsay, Ibis, 1877, p. 454; Elliot, 



Man. Bucerot. pi. vi. [text] (1877); Gates, B. Brit. Burmah, ii. 



p. 87 (1883) ; Oates, Ibis, 1888, p. 72 ; Gates, Hume's Nests 8,- 



Eggs Lid. B. iii. p. 68 (1890). 

 Homraius bicornis, Bonap. Consp. Vol. Anisod. p. 2 (18.54) ; Horsf. 



is- Moore, Cat. B. Mus. E. Ind. Co. ii. p. 583 (1856-58) ; Moore, 



P. Z. S. 18.59, p. 447; Jerd. B. Ind. i. p. 242 (1862); Blyth, 



Ibk, 1866, p. 349 ; Jerd. Ibis, 1872, p. 4 ; Marshall, Birds' Nests 



in Ind. p. 46 (1877). 

 Buceros (Dichoceros) bicornis, Dubois, Bull. Mus. Belg. iii. p. 195 



(1884). 

 Buceros cavatus, Shato, Gen. Zool. viii. p. 18 (1811); Raffl. Tr. 



Linn. Soc. xiii. p. 291 (1822); Merrem, Ersch u. Gruber, Y). 285 



(1824) ; Vig. App. Mem. Baffl. p. 666 (18.30) ; Jerd. Madr. Journ. 



p. 37 (1840) ; Blyth, J. As. Soc. Beng. xii. p. 986 (1842) ; Gould, 



Cent. Birds, p. 44 (1832) ; Blyth, J. As. Soc. Beny. xvi. p. 993 



2 4 2 



