BUCEROTIDiE. 227 



white ; head and neck cinereous ; back of head crested ; 

 eyebrows, breast, and belly white, as are also the shafts 

 of the middle tail-feathers ; legs brown ; bill slightly arched, 

 notched ; maxilla slightly arched with a white keel ; the 

 region of the nostrils white, with black margins ; tip and 

 denticulations reddish ; mandibles black, with five elevated 

 ribs, white spotted. Length, 17"; wing, 8"; tail, 7'". 

 Inhabits South Africa, according to Hartlaub. — Sed non vidi. 



456. Buceros Erythrorhynctius ; Tockus 



Erythrorhynchus, Temm., PI. En. 260 ; Hartlaub, O. 

 W. Af., 165; Hydrocorax Senegalensis Erythrorhyn- 

 chus, Briss., Orn. IV., p. 575 ; Le Toe, Le Vaillant, 

 PL 238. 



Top of head grey; forehead, cheeks, a line half-way down 

 the middle of back, some spots upon the shoulders, some of 

 the inner wing- feathers, more or less of the three outer 

 tail-feathers, and all the under parts, white ; outer wing- 

 feathers black, with some white markings ; four inner tail- 

 feathers and rump black ; bill deep-red, elongated, curved, 

 sharply keeled above, not casqued, 3| inches long. Total 

 length, 19" ; tail, 7" ; wing, 7" 6'". 



Sundevall gives this species as an iuhabitant of Kaffraria. I have 

 not heard of it there ; but have receix^ed it in considerable numbers 

 from Mr. J. Chapman, who procured it towards the Zambesi. Mr. 

 Andersson obtained it in Damaraland. 



457. Buceros NaSUtUS. (L.) Hartlaub, o. w. 

 Af, p. 164 ; Hydrocorax Senegalensis Melanorhyn- 

 chus, Briss., Orn. IV., p. 573, t. 46, fig. 1 ; Galao 

 Nasique, Le Vail., O. A£, PI. 236, 237 ; Tochus 

 Hastatus, Cuv., PI. Enl. 890. 



Above, pale-brown, the margins of the feathers lightest ; 

 head and neck, dusky-cinereous ; a line over each eye, patch 

 oil the back, and the nuchal half- collar white ; underside 

 whitish ; breast brown; the quill feathers of wing with light 

 margins; base of tail white; all tail-feathers black, with the 

 exception of the centre ones, which are of the colour of the 

 back, tip white, shafts black, centra ones white ; bill curved, 

 casqued ; upper mandible white, or pale yellow, at the basal 

 half ; tip and edge red ; lower man lible,' basal half, black, 



