BUCEROTIDj'E. 
Genus ANTHRACOCEROS Reichenbach. 
Anthracoceros coronatus (Bodd,), Pied Homhill. 
[ Anthracoceros coronatus coronatus (Bodd.)* 
Buceros coronatus Boddaert, Tabl. PI. Enlum. 1783, p. 53 : Malabar. 
Dist r. — Extra-liinital . ] 
Anthracoceros coronatus leucogaster (Myth). 
Buceros leucogastcr Blvth, Journ. Asiat. Soc. Bengal, x, 1841, 
p. 92 a : Tenasserim. 
Distr . — Malay Peninsula (south to Perak).' 
Anthracoceros coronatus convex 11s (Tentnt.), 
Buceros convexus Temminck, PI. Col. 530, 1832 : Java. 
Buceros intermedins Blyth, Journ. Asiat. Soc. Bengal, xvi, 1847* p. 995 : 
Penang. 
Distr . — Malay Peninsula (north to Patani); Tambelan Islands. 
Sumatra; Rhio Archipelago; West Sumatran Islands of 
Mansalar, the Mentawi group and Nias. 
Borneo. 
Java; Bali. 
Anthracoceros coronatus zamelaenus (Oberh.). 
Hydrocissa convexa zamelaena Oberholser s Bull. U.S. Nat. Mus. 
159, 1932, p. 38 ; Lingung Island, North Natuna Islands. 
Distr. — North Natuna Islands. 
Anthracoceros coronatus harussensis Oberh.) . 
Hydrocissa convexa barussensis Oberh olser, Journ. Wash. Acad, 
Sci. xiv, 1924, p. 301 : Tana Bala Island, Batu Islands, West 
Sumatra. 
Distr . — Batu Islands, West Sumatra. 
Anthracoceros malayanus (Raffles). 3 Black Homhill. 
Buceros malayanus Raffles, Trans. Ginn, Soc. xiii, 1822, p. 292 : 
Sumatra. 
Buceros antracicus Temm., FI. Col. 52Q, 1832 : Borneo. 
Buceros bicolor Eyton, Proc, Zool. Soc. 1839, p. 104 : Malacca. 
* Although there is a slight overlap in the range of leucogastcr and 
convexus in the north of the Malay Peninsula both forms can very well 
be regarded as races of coronatus, 
2 We believe that white and black bills are characteristic of male and 
female respectively and that Grant (Cat Birds, xvit, 1892, p. 369) was 
wrong in attributing the black bill to a subadult stage. The meaning of 
the colour of the superciliary stripe is less dear : it is white or dark grey 
independent of age and sex. 
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