Birds of Celebes: Bncerotidae. 
235 
or clay, leaving only a small window through which she receives the food he 
brings her during her voluntary imprisonment” (Newton, D. B. 437). 
For anatomical characters see Grant, Cat. B. XVII 1892, 347; Blanford, 
Faun. Br. Ind., B. Ill 1895, 140; Gadow, Bronn’s Kl. u. Ord. VI, 4, Av. II, 
p. 234 (1893). 
FAMILY BUCESOTIDAE. 
Map VII. 
The characters as for the order. The family is divided by Elliot and 
Grant into two subfamilies, Bucorvinae (or Bucoracinae) and Bucerotinae, the 
former contains only one genus confined to Africa and distinguishable from all 
other Hornbills by its long tarsus, twice as long as the middle toe and claw, 
the latter with about 20 genera, belonging to the Indian countries, the East India 
Archipelago, and Africa, having a short tarsus about equal to or shorter than 
the middle toe and claw. 
GENUS RHABDOTORRHINUS M.AWg.‘) 
The small Celebesian Hornbill is somewhat bigger than a crow, the bill 
very large, not furnished with a prominent casque, but in the adult the culmen 
is drawn up into a high sharpe ridge covering more than the basal 
two-thirds of the bill, with three parallel longitudinal ridges on the 
side of the maxilla; some transverse ridges occasionally at the base of the lower 
mandible; the nostril broad oval, situated at the base of the maxilla between 
the two lowest ridges and partially protected by feathers. The genus consists 
of a single species, in which the sexes are different, the female being black, 
the male having a yellow face and throat (changing to white after death with 
time and exposure of the skin). 
f *75. RHABDOTORRHINUS EXARATUS (Temm.). 
Lesser Celebesian Hornbill. 
a. Buceros exarhatus “Eeinw.” (I) Temm., PI. Col. 1823, II, 91, pi. 211 (Q); (2) Wagl, 
Syst. Av. Buceros 1827, Nr. 15; (3) Less., Man. d’Orn. 1828, II, 107; (4) SchL 
& Miill., Verb. Natimrk. Comm. 1839—44, Aves 23; (5) Reinw., Reis Ind. Archip. 
in 1821, 1858, 592; (6) Cray, HL. 1870, II, 128. 
h. Buceros exarhsetus (1) Blytli, J. A. S. B. 1847, XVI, 997. 
c. Buceros exaratus (1) Cray, Cen. B. 1817, H, 400; (2) Blyth, Cat. B. Mus. As. 8oc. 
1849, 44; (2^''^) Cray, P. Z. S. 1860, 356 (Moluccas!); (3) SchL, Mus. P.-B. Buceros 
1862, 10; (4) Finscli, New Cuinea 1865, 162; (V) Wald., Tr. Z. S. 1872, VIH, 
47, pi. V; (6) Briigg., Ahh. Ver. Bremen 1876, V, 56; (7) Lenz, J. f. 0. 1877, 
370; (8) Rosenb., Malay. Arcbip. 1878, 274; (9) Meyer, Ibis 1879, 65; (9^^^) Salvad., 
1) Qa^dojTos’ = striatus, L ^ivos — nasus. 
30 * 
