is. pRioxups. 321 



2. Prionops poliocephalus. 



Ijanius poliocephalus, Stanley, in Salfs Trav. Abyss. Appen. p. 50. 

 Prionops cristatus, Rilpp. Faun. Abyss, p. 30, pi. 12. fig. 2 ; Vierth, 



Naum. 1852, p. 48 ; Ilengl. Syst. Uebers. p. 34. 

 Prionops geolfro^i, Des Murs, in Lefehvre Voy. Abyss. Zool. p. 98 (iiec 



VieilL). 

 Prionops concinnatus, Siotdcv. Oefv. K. Vet. Akad. Forh. Stockh. 



1850, p. 130. 

 Prionops poliocephalus, Gray, Gen. B. i. p. 292 ; Rilpp. Syst. Uebers. 



p. 62 ; Bp. Consp. i. p. 359 ; Cab. Mus. Hein. i. p. (58 ; Hartl. P. Z. 



S. 1863, p. 105 ; Scl. P. Z. 8. 1864, p. 109 ; Antin. Cat. descritt. 



Ucc. p. 53 ; Hevyl. Orn. N. O.-Afr. p. 454 ; Gray, Hand-l. B. i. 



p. 395 ; Antin. l^ Salvad. Ucc. Bogos, p. 81. 



Adult male. Back black, with a greenish gloss, the outer upper 

 tail-coverts white on their outer web ; wings black like the back, 

 with a broad longitudinal bar of white formed bj- the inner median 

 and greater coverts and the outer webs of the middle secondaries, 

 the rest of the secondaries tipped with white, the primaries with a 

 broad white baud across the inner web ; tail greenish black, tipped 

 with white, which increases graduallj- towards the outermost, this 

 being entirely white with a black base to its inner web ; lores and 

 frontal plumes recurved and hiding the nostrils : fore part of head 

 crested, but the plumage stiff, and not extending beyond the nape ; 

 sides of face white ; crown of head dark pearly grey ; hind neck 

 white, forming a collar; entire under surface of body ■white, the 

 flanks mixed with grey ; under wing-coverts black, as also are a 

 few feathers at the sides of the upper breast ; " biU black ; eye- 

 wattle sulphur-yellow ; feet vermilion ; iris pearly " (Heuqlin). 

 Total length 9 inches, culmen 0-85, wing 4-55, tail 3-9, tarsus 0-95. 



Hah. North-eastern xifrica. 



a. Ad. St. Abyssinia. Dr. Eiippell [C.]. 



b. cf ad. sk. Abyssinia. E. B. Shai-pe, Esq. 



c. Ad. sk. White Nile {Mus. Holm.). R. B. Sharpe, Esq. 



3. Prionops talacoma. 



Prionops talacoma. Smith, Report F.rp. Expl. C. Afr. App. p. 45 ; id. 

 111. Zovl. S. Afr. Aves, pi. v. ; Gray, Gen. B. i. p. 292 ; Bp. Consp. 

 I. p. 359; Gray, Ann. N. H. (3) xiv. p. 374; Kirk, Ibis, 1864, 

 p. 319 ; Gurnei), P. Z. S. 1864, p. 3 ; Anderss. t. c. p. 5 ; Layard, 

 B. S. Afr. p. 160; Gurney, Ibis, 1868, p. 267 ; Grai/, Ilund-l. B. 

 i. p. 395 ; Ayres, Ibis, 1869, p. 293; S/tarpe, P. Z. S. 1870, p. 148; 

 Finsch ^- Hartl. Voy. Ostaf. p. 365 ; Sharpe, Cat. Afr. B. p. 49 ; 

 Gurney in Anderss. B. Dam. Lcl. p. 141 ; Bocage, Jnrn. Lisb. 1874, 

 pp. 7, 24 ; Buckley, Ibis, 1874, p. 376. 



Adult nude. Above black, with a greenish gloss, some of the outer 

 upper tail-coverts broadly tipped with white ; wings black like the 

 back, with a broad white bar down the wing, formed by the inner 

 median and greater coverts and the outer web of the middle secon- 

 daries, all of which are tipped with white, the primaries with a 

 broad bar of white across the inner web ; tail greenish black, broadlv 

 ti])pcd ^ith ^\llite, which increases gradually tn^^ ards the outermost 



