6 PICARI AS 
Cranorrhinus cassidiv Cabanis & Heine, Mus. Heinean. Vol. 2, p. 173 (1860); Elliot, 
Monogr. Bucerot. pl. 16 (1882). 
Buceros (Cranorrhinus) cassidiv Gray. Hand-list of Birds, Vol. 2, p. 129 (1870); Dubois, 
Bull. Mus. Hist. Nat. Belg. Vol. 3, p. 192 (1884). 
Mindanao, Camiguin 
2. Cranorrhinus leucocephalus (Vieillot). 
(Philippine Islands). 
Buceros leucocephalus Vieillot, Nouv. Dict. Hist. Nat. Vol. 4, p. 592 (1816). 
Buceros sulcatus Temminck, P|]. Col. Vol. 2, p. 89, pl. 69 (1823). 
Tockus sulcatus Bonaparte, Consp. Gen. Avium, Vol. 1, p. 91 (1850). 
Calao sulcatus Bonaparte, Consp. Volucr. Anisod. p. 3 (1854). 
Buceros (Cranorrhinus) sulcatus Gray, Hand-list of Birds, Vol. 2, p. 129 (1870). 
Cranorrhinus leucocephalus Walden, rans. Zool. Soc. Lond. p. 165, pl. 27 (1875) ; Elliot, 
Monogr. Bucerot. pl. 19 |1882). 
Buceros (Cranorrhinus) leucocephalus, Dubois, Bull. Mus. Hist. Nat. Vol. 3, p. 193 (1884). 
Malacca, Sumatra, Bor- 
3. Cranorrhinus corrugatus (Temminck). 
neo, 
Buceros corrugatus Temminck, P|. Col. Vol. 2, p. 85, pl. 531 (1832) (Mas.). 
Buceros gracilis Temminck, ibidem, p. 87, pl. 535 (1832) (Fem.). 
Buceros rugosus Begbie, Ann. Mag. Nat. Hist. Vol.17, p. 404 (1846). 
Calao (Cassidix) corrugatus Bonaparte, Consp. Gen. Avium, Vol. 1, }. 90 (1850). 
Rhyticeros (Cassidix) corrugatus Bonaparte, Consp. Volucr. Anisod, p. 3 (1854). 
Hydrocissa migratoria Maingay, Proc. Asiat. Soc. Beng. p. 196 (1868). 
Cranorrhinus corrugatus Walden, Trans. Zool. Soc. Lond. Vol. 8, p. 51 (1872); Elliot, 
Monogr. Bucerot. pl. 17 (1882). 
Buceros (Cranorrhinus) corrugatus Dubois, Bull. Mus. Hist. Nat. Belg. Vol. 3, p. 192 (1884). 
Guimaras, Panay (Phi- 
4. Cranorrhinus waldeni Sharpe. 
lippine Islands). 
Cranorrhinus waldeni Sharpe, Trans. Linn, Soc. Lond. {2), Vol. 1, pp. 322, 351 (1877); 
Elliot, Monogr. Bucerot. pl. 28 (1882). 
Buceros (Cranorrhinus) waldeni Dubois, Bull. Mus. Hist. Nat. Belg. Vol. 3, p. 193 (1884). 
3. GENUS BUCEROS LINN4us 
Buceros Linnezus, Syst. Nat. Vol. 1, p. 153 (1766) (type : B. rhinoceros). 
Synonym : Meniceros Gloger, Hand- u. Hilfsb. p. 335 (1842) (type : B. rhinoceros), 
Characters. Bill large, curved, terminating in a sharp point; casque very large, two- 
thirds the length of the culmen, elevated, rounded on the upper edge, straight or much curved 
upward anteriorly; base of the casque and of both mandibles black only in the males, Nostrils 
small, basal, lateral, and hidden. Sides of throat naked. Crest moderate. Tail long, rounded, 
white with a broad subterminal black band. Size very large. 
Geographical Distribution. Malacca, Sumatra, Borneo, Java. 
KEY TO THE SPECIES 
1. Casque curved upwards anteriorly B. RHINOCEROS. 
2. Casque nearly straight, not curved upwards anteriorly B. SILVESTRIS. 
Malacca, Sumatra, Bor- 
neo. 
1. Buceros rhinoceros Linnzus (Plate 1, Fig. 2.) 
Buceros rhinoceros Linneus, Syst. Nat. Vol. 1, p. 153 (1766). 
Buceros rhinoceros : a, sumatranus, b. borneensis, c. indica Miller & Schlexel, Verh. Ges. 
Ned. Ind. p. 22(1839-44). 
Buceros rhinoceroides et sublunatus (Yemminck) Bonaparte, Consp. Gen. Avium, Vol. 1, 
| 
p- 59, 90 (1850). 
