DUTCH BORNEO-EXPEDITION. 177 
lower and tip of upper mandible white, central part of 
upper mandible and front of casque chrome-yellow, rest of 
casque and lower basal corner of upper mandible coral-red, 
feet yellowish green; the male is moreover characterized 
by a black line running from the nostril along the lower 
part of the horn, separating the red from the yellow parts 
of the casque. 
Hab. Malay Peninsula, Sumatra and Borneo, where it 
is found in the forests of the plains as well as in the 
higher mountain-regions. 
61. Rhinoplax vigil. 
Buceros vigil Forst. Ind. Zool. p. 40 (1781). ° 
Rhinoplax scutatus Salvad. Uce, Born. p. 88. 
Rhinoplar vigil Everett, L. B. Born. p. 162; Sharpe, Ibis 1890, 
p. 15. 
Several specimens observed along the high rock-walls 
above my hunting station on Mount Liang Koeboeng. 
Hab. Malay Peninsula, Sumatra and Borneo. 
62. Berenicornis comatus. 
Buceros comatus Raff. Trans. Linn. Soc. XITI, p. 399 (1822). 
Berenicornis comatus Bp. Consp. I, p. 91. 
Anorrhinus comatus Everett, L. B. Born. p. 164; Sharpe, Ibis 1890, 
p. 16. 
An adult female from Bruny River (Upper Mahakkam). — 
Tris ochraceous, bill and feet dirty gray. 
Hab. Malay Peninsula, Sumatra and Borneo. 
»Dieser Vogel lebt nur paarweise. Seine Stimme ist ein 
lebhaftes, sich oft hinter einander wiederholendes »kukuk”, 
beinahe wie der Ruf des europaischen Kukuks” (v. Berchtold). 
Meropidae. 
63. Merops philippinus. 
Merops philippinus Linn. Syst. Nat. Ed. 13, I, p. 183 (1767) 1); Salvad. 
Uce. Born. p. 89; Everett, L. B. Born. p. 164. 
1) A supplementary edition to the twelfth, published at Vienna, 1767, 
Notes from the Leyden Museum, Vol. X XI. 
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