CAPITONID^I LYBIUS 157 



B. Upper mandible smooth. 



a. Tail square. 



a 1 . Culmen strongly ridged between the 



nostrils; wing somewhat pointed Slactolcema, p. 163. 



b 1 . Culmen almost flat ; wings rounded Barbatula, p. 166. 



b. Outer tail feathers considerably shorter than 



the others ; culmen rounded; bill curved Trachyplumus, p. 170. 



Genus I. LYBIUS. 



Type. 

 Lybius, Hermann, Tab. Affin. Anim. pp. 217, 235 



(1783) L. abyssinicus. 



Melanobucco, Shelley, Ibis, 1889, p. 476 L. bidentatus. 



Edge of the upper mandible with a very distinct tooth ; culmen 

 rounded between the nostrils and curved throughout ; a naked space 

 round the eye ; chin angle naked with a few scattered bristles ; 

 breast feathers normal with hair-like shafts ; wing rounded, the 

 secondaries falling short of the longest primaries by less than the 

 length of the first toe without claw; anterior outer (i.e., third) and 

 posterior outer (i.e., fourth) toes approximately equal; tail short 

 and slightly rounded. 



This genus is confined to Africa, whence fifteen species are 

 recognised by Shelley ; only one of these is found within our limits. 



449. Lybius torquatus. Black-collared Barbet. 



Le Barbu a plastron noir, Lectnll. B<irbus, p. 65, pi. 28 (1806). 



Bucco torquatus, Dninont, Diet. Sci. Nat. iv, p. 56 (1806). 



Bucco nigrithorax, Cuv. Begne An. p. 428 (1817). 



Ltemodon nigrithorax, Gurney, Ibis, 1862, p. 32 [Natal] ; La-yard, 

 B. S. Afr. p. 233 (1867) ; id. Ibis, 1871, p. 226 [Kanye] . 



Pogonorhynchus nigrithorax, Kirk, Ibis, 1864, p. 328 [Zambesi] . 



Pogonorhynchus torquatus, Marshall, Mon. Capit. p. 19, pi. 10 (1871) ; 

 Buckley, Ibis, 1874, p. 367 [Pretoria dist.] ; Shelley, Ibis, 1875, p. 82 

 Pinetown] ; Barratt, Ibis, 1876, p. 200 [Rustenburg] ; Sharpe, ed. 

 Layard's B. S. Afr. pp. 172, 811 (1876-84) ; Ayres, Ibis, 1879, 

 p. 296; Holub d- Pelz. Orn. Siid-Afr. p. 161 (1881) ; Shelley, Ibis, 

 1882, p. 248 [Umfuli River]; Butler, Feildcn, and Reid, Zoologist, 

 1882, p. 208 [Ladysmith] , Bendall, Ibis, 1896, p. 163 [Barberton] . 



Melanobucco torquatus, Shelley, Ibis, 1889, p. 476 ; id. Cat. B. M. xix, 

 p. 24 (1891) ; id. B. Afr. i, p. 126 (1896) ; Marshall, Ibis, 1896, p. 242 

 [Salisbury dist.] ; Woodward Bros, and SJiarpc, Ibis, 1897, pp. 405, 

 500 [Zululandj ; Sowerbij. Ilia, 1898, p. 572 [Chiquaqua] ; 



