BUCEnOTID.E, 
Buceros ellioiti Hay, Madr. Joura, xiu, pt, 2, [844, p, 152: Malacca. 
Buceros nigrirostris Blyth, Journ, As. Soc. Bengal, xvi, 1847, p. 995 : 
Malacca. 
Dish . — Malay Peninsula. 
Sumatra; Banka; Billiton. 
Borneo. 
Genus CRANORRHINUS Cabanis and Heine. 
Cranorrhinus corrugatus (Temm.). Wrinkled Hornbill. 
Cranorrhinus corrugatus corrugatus (TemtU.). 
Buceros corrugatus Temminck, PI. Col. 53 r, 1832 : Bonieo. 
Buceros gracilis Temm,, PI. Col, 535, 1832 : Pontianak, Borneo. 
Buceros rugosus Begbie, Malay Peninsula, 1834, p. 513: Malay 
Peninsula= Malacca. 
Hydrocissa migratorius Maingay, Proc. Asiat. Soc. Bengal, [868, p. (96 : 
Malacca. 
Distr. — -Malay Peninsula, 
Sumatra. 
Borneo. 
•Cranorrhinus corrugatus megistus Oberh. 
Cranorrhinus corrugatus megistus Oberholser, Smiths. Misc. Coll, 
lx, 1912, p, 6 : Tana Bala Island, Batu Islands, West Sumatra, 
Distr . — Batu Islands, West Sumatra. 
Genus RHYTICEROS Reiclienbach. 
Rhyticeros plicatus (Forst.). Wreathed Hornbill, 
[Rhyticeros plicatus plicatus (Forst.). 
Buceros plicatus Forster, in Pennant, Ind. Zool, 1781, p, 40 ; Ceram, 
Distr. — Extra-limital . ] 
Rhyticeros plicatus subruficollis (Blyth) .* 
Bwcerojr subruficollis Blyth, Joura. Asiat. Soc. Bengal, xii, 1843, 
p, 177 ; Tenasserim. 
Visit. — Malay Peninsula. 
Sumatra. 
Borneo. 
1 Bartels and Stresemann (Treubia, xi, 1929, p. 112) regard R. undulaius 
as a subspecies of plicatus but it is open to question whether subruficollis 
Is not more nearly related to that bird. Of it and the three more western 
forms, undulaius, subruficollis and narcondami the most distinct is undulaius 
in having the base of the bill in both sexes covered with transverse ridges 
which are absent in the others. Therefore we would regard undulaius as a 
distinct species and treat the others as races of plicatus. 
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