15. LOPHOCEROS. 399 



/. Middle pair of tail-feathers -with black or 

 dark browu shafts. 

 k'. Wing-cdverts spotted with white, 

 a". Bill dark red. 



rt'. Foreliead, cheeks, and sides of the 

 head pure white ; two outer tail- 

 feathers white damarensis, p. 411. 



b^. Forehead, cheeks, aud sides of the 

 head blackish gi-ey aud white ; 

 two outer tail-feathers black and [p. 409. 



white erythrorhynchus, 



b". Bill orange-yellow. 



c^. Feathers on the chest white, edged 

 with y ack. 

 a': MidtUe primaries spotted with 



white on the outer web only . . leucomelas, p. 414. 

 b^. Middle primai-ies spotted on both 



webs with white deyans, p. 415. 



iP. Feathers on the chest white with 



black shafts flavirostris, p. 412. 



c". Bill red, with yellowish-white ex- 

 tremity jachsoni, p. 416. 



I'. AVing-coverts not spotted with white. 

 (Bill red, -nith yellowish-white ex- 

 tremity.) deckeni, p. 416. 



1. Lophoceros melanoleucus. 



Le Calao couronne, Zei-a«V/. Hist. Nat. d'Ois. Afr. v. p. 117, pis. •^34, 



235 (1806). 

 Buceros melanoleucus, Lkht. Cat. Her. Xat. Ear. p. 8 (1793) ; Gray, 



Gen. B. ii. p. 400 (1847) ; Hartl. Orn. Ost-Afr. p. 164 (1857) ; 



Schl. Mus. Paijs-Bas, i. Buceros, p. 12 (1862) ; Finsch ^- Hartl. 



Vog. Ost-Afr. p. 485 (1870) ; Heur/l. Orn. N.O.-Afr. i. p. 720 



(1871) ; Fisch. &i Reich. J. f. O. 1879, p. 343, 1880, p. 141 ; 



Bohm, J. f. 0. 1883, p. 168 ; Shelley, P. Z. S. 1885, p. 224. 

 Tockus melanoleucus, Bonap. Consp. Gen. Av. i. p. 91 (1850) ; Hartl. 



J. f. O. 1854, p. 128, 1861, p. 201 ; Id. Orn. W.-Afr. p. 164 



(1857) ; Horsf. ^- Moore, Cat. B. Mus. E. Lid. Co! ii. p. 597 



(1856-58) ; Guryiey, Ibis, 1862, p. 157 ; Kirk, Ibis, 1864, p. 327 ; 



&clat. P. Z. S. 1864, p. Ill ; Bocar/e, J. Sc. Xat. Lisb. ii. p. 347 



(1868) ; Sharpe, P. Z. S. 1870, p. 149 ; Sharpe, Cat. Afr. B. p. 9 



(1871) ; Gidliv. P. Z. S. 1872, p. 16 ; Sclat. Rev. List Vert. An. 



p. 172 (1872); Gurney, ed. Anderss. B. Dnmara-Land, p. 208 



(1872); Sharpe, ed. Layard's B. S. Afr. p. 127 (1875); Reich. 



J. f. O. 1875, p. 12 ; Nichol. P. Z. S. 1878, p. 358 ; Bocage, Orn. 



Angola, p. 110 (1881) ; Elliot, Mon. Bucerot. pi. 49 [text] (1880) ; 



Shelley, P. Z. S. 1881, p. 591 ; Floiver, P. Z. S. ISQO, p. 401. 

 Buceros (Lophoceros) melanoleucus, Gray, Hand-l. B. ii. p. 130, 



sp. 7906 (1870); Dubois, Bull. Mus. Beta. iii. p. 214 (1884), iv. 



p. 147 (1886). 

 Rhynchoceros melanoleucus, Bonap. Consp. Vol. Anisod. p. 3 (1854). 

 Lophoceros melanoleucus, Cah. ^- Heine, Mus. Hein. ii. p. 168 



(1860) ; Cab. V. d. Decken's Reis. iii. p. 37 (1869) ; id. J. f O. 



1878, p. 2.35; Schalow, J.f. 0. 1883, p. 348 j Fisch. J.f. O. 1885, 



p. 126; Shelley, Ibis, 1888, p. 61. 

 Buceros coronatus, Shazc {nee Bodd.), Gen. Zool. viii. p. 35 (1811); 



