VISCOUNT WALDEN ON THE BIRDS OF CELEBES. AT 
But it seems possible that the absence and presence of the white frontal spots only denote 
phases of plumage. If not, the Indian bird will belong to a different species, while the 
Celebean may be either the same as the Indian (in itself highly improbable), or repre- 
sent a third form. 
CAPRIMULGID. 
Lyncornis, Gould. 
56. LyNcorNIs MACROPTERUS, Bp. Consp. i. p. 62, “Celebes” (1850); Wallace, Ibis, 
1860, p. 141. 
Hab. Menado (Wallace). 
BUCEROTID&. 
Buceros, Linneus. 
57. Buceros Exaratus, “ Reinw.,” Temm. Nouv. Recueil, livr. xxxvi. pl. 211, 2, 
“Celebes” (2nd August, 1823); Schlegel, Mus. Pays-Bas, Buceros, p. 10. 
(Pl. V. fig. 1, 5; fig. 2, 2.) 
Hab. Tondano (Forsten); Menado (mus. nostr.); appears to be restricted to the 
north-eastern parts of Celebes. 
The male is distinguished from the female by having the throat, cheeks, ear-coverts, 
sides of neck, and superciliary stripes springing from base of mandible white. In my 
examples the white supercilium has light ferruginous-brown feathers intermixed. In 
dimensions the female appears to be somewhat smaller. The example I note from is 
marked by the collector “female,” while the entirely black individuals are marked 
“males.” According to Professor Schlegel (J. c.) the subject of Temminck’s plate was a 
female ; and, together with Salomon Miiller, he describes the male as having the throat 
and sides of the head white. 
As this curious form does not belong to any of the established subdivisions of the 
family, I leave it for the present in the old Linnean genus. It is certainly not a 
Hydrocissa, as classed by Prince Bonaparte. It belongs to the group of Hornbills, in 
which the casque and the true maxilla are completely blended together, the pro- 
longation of the casque forming, in old birds, the apex of the maxilla. 
CRANORRHINUS, Cabanis. 
58. CRANORRHINUS CassIDIx (Temm.), Pl. Col. 210, 3, “Celebes” (2nd August, 1823). 
Buceros cassidix, Temm.; Schlegel & Miiller, Verhandel. Zool. Aves, p. 24, pl. 4 bis, 2; Schlegel, 
Mus. Pays-Bas, Buceros, p. 9; Wallace, Malay Archip. i. p. 364. 
Hab. Tondano (Reinwardt); Menado (mus. nostr.); district of Maros, Macassar 
(Wallace). 
The types of the two plates above cited came from Tondano. In the old males the 
