PAM. BUCEROTIDAS 
13} 
Geographical Distribution. — South-eastern Asia, and the greater part of the Malayan 
Archipelago. 
KEY TO THE SPECIES 
A. Tail pure white. 
1. Base of both mandibles grooved transversally 
a. Base of both mandibles not grooved. 
2. Top of head and occiput dark chestnut ; rest of head and neck white tinged 
with buff in the male; head black, and gular skin deep blue in the female 
b. Head and neck bright chestnut in the male; head black, and gular skin white in the 
female. 
3. Size large 
4. Sise much smaller . 
B. Tail black. 
5. Like R. narcondami, but with a black tail. and top of head and neck darker 
brown . 
1. Rhytidoceros undulatus (Shaw). (Plate 2, Fig. 5.) 
Buceros undulatus et javanicus Shaw, Gen. Zool. Vol. 8, pp. 26, 28 (1811). 
Buceros niger Vieillot, Nouv. Dict. Hist. Nat. Vol. 4, p. 592 (1816). 
Buceros annulatus et javanus Dumont, Dict. Sc. Nat. Vol. 6, pp. 210, 215 (1817). 
Buceros plicatus Muller & Schleger (nec Forster), Verh. Ges. Ned. Ind. pp. 24, 30 
(1839-1844) 
Buceros pucoran Blyth, Journ. Asiat. Soc. Beng. Vol. 12, Pt. 2, p. 990 (1843). 
Buceros fusavan Blyth, ibidem, Vol 16, p. 998 (1847). 
Riiyticeros plicatus Reichenbach, Syst. Avium, pl. 40 (1849). 
Galao plicatus Bonaparte, Consp. Gen. Avium, Vol. 1, p. 90 (1850). 
Rhytidoceros obscurus Cabanis & Heine (nec Gmelin), Mus. Heinean. Vol. 2, p. 172 (1860). 
Buceros (Rhyticeros) obscuyus Gray, Hand-list of Birds, Vol. 2, p. 129 (1870). 
Rhyticeros obscurus Hume, Nests and Eggs Ind. Birds, p. 115 (1873). 
Aceros plicatus Blyth, Cat. Mamm. and Birds Burma, p. 69 (1875). 
Rhytidoceros undulatus Tweeddale, The Ibis, p. 292 (1877); Elliot, Monogr. Bucerot. 
pl. 35 (1882) 
Rhyticeros undulatus Hume & Davis, Str. F. Vol. 6, p. 111 (1878). 
Buceros plicatus var. widulata Dubois, Bull, Mus. Hist. Nat. Belg. Vol. 3, p. 206 (1884). 
2. Rhytidoceros subruficollis (Blyth). 
Buceros subruficollis Blyth, Journ. Asiat. Soc. Beng. Vol. 12 (1), p- 177 (1843). 
Buceros plicatus Blyth (nec Forster), ibidem, p. 991 (1843). 
Rhyticeros subruficollis Horsfield & Moore, Cat. Birds Mus. E. Ind. Co. Vol. 2, p. 600 
(1856-1858). 
Rhytidoceros subruficollis, Cabanis & Heine, Mus. Heinean. Vol. 2, p. 172 (1860); Elliot, 
Monogr. Bucerot. pl. 36 (1882). 
Buceros (Rhyliceros) pusasan (part.) Vickell, The Ibis, p. 180 (1864). 
Aceros subruficollis Biyth, Cat. Mamm. and Birds Burma, p. 69 (1875). 
Buceros plicatus var. subrupicollis Dubois, Bull. Mus. Hist. Nat. Belg. Vol. 3, p. 206 (1884). 
3. Rhytidoceros plicatus (Forster). 
3ucervos plicatus et rostratus Forst , Ind. Zool. p. 40 (178r). 
Buceros obscurus Gmelin, Syst. Nat. Vol. 1, p. 362 (1788). 
Buceros vuficollis, Vieillot, Nouv. Dict. Hist. Nat. Vol. 4, p. 600 (1816). 
Calao rupficollis Bonaparte, Consp. Gen. Avium, Vol. 1, p. 90 (1850). 
Rhyticeros ruficollis et plicatus Bonaparte, Consp. Volucr. Anisod, p. 3 (1854). 
Calao papuensis Rosenberg, Nat. Tijdschr. Ned. Ind. p. 229 (1863). 
Rhytidoceros ruficollis Salvadori, Ann. Mus. Stor. Nat. Genova, Vol 7, p. 763 (1875) 
Buceros flawvicollis Ramsay, Proc. Linn. Soc. N. S. Wales, Vol. 1, p. 393 (1876). 
R. UNDULATUS. 
R. SUBRUFICOLLIS. 
RR. PLICATUS. 
R. NARCONDAMI. 
R. EVERETTI. 
Cachar, Manipur, Pegu. 
Tenasserim, Malacca, 
Sumatra, Borneo, Ja- 
va. 
Arrakan, Pegu, Tenasse- 
rim, Siam, Malacca, 
Sumatra, Borneo. 
Moluccas, Papua and 
Solomon Islands: New 
Britain, New Guinea, 
Waigiou, Mysol, Hal- 
mahera, Morty, Bat- 
chian, Ceram, Amboy- 
na, Salwatti, Ravak, 
Guebeh and Batanta, 
