19. siGJioDi's. 323 



1>". Chin and ear-coverts black like tlie rest of the 



throat ; abdomen lioht tawuy buff caniceps, p. 323. 



h'. Frontal tuft orange butf scopifrons, p. 324. 



h. Back ashy or di-aVbrown ; the head black, as well as 

 the frontal crest ; hind neck black like the head ; 

 under surfiice black. 

 c'. With a white bar on the inner web of the pri- 

 maries. 

 c". Size very much larger: wing 5'25 inches; 



back ashy brown retzi, p. 324. 



cV. Size much smaller : wing 5 inches ; back 



drab-bro\^Ti tricohr, p. 325. 



d'. With no white bar on the primaries graculinus, p. 325. 



1. Sigmodus rufiventris. 



Siu'modus rufiventris, Sp. Rev. et Maq. de Zool. 1853, p. 441 ; Hartl. 



"Orn. Westafr. p. lOo ; id. J. f. O'. 1861, p. 171 ; Cass. Pr. Acad. 



N. Sci. Fhiiad. 1859, p. 13 : Sharpe, Cat. Afr. B. p. 50. 

 Prionops rufiventi-is, Gray, Hand-l. B. i. p. 395 ; Finsch ^- Hartl. 



Vog. Ostaf. p. 364; Heugl. Om. N.O.-Afr. p. 455, note. 



Adult. General colour above black with a slight greenish gloss, 

 the quills and tail uniform with the back, all the primaries with a 

 broad bar of white across the inoier web ; head pearly grey, with a 

 slight gloss of lilac, the forehead and lores white, the grey colour 

 occupying the chin and entire sides of face as well as the head ; 

 throat black, forming a collar which runs round the neck and sepa- 

 rates the head from the greenish black of the back ; breast greyish 

 white ; rest of under surface light chestnut or deep tawny ; under 

 wing-coverts black ; bill and feet red. Total length 7'5 inches, 

 culmcn 0-85, wing 4'45, tail 3-2, tarsus 0'85. 



Halj. Gaboon. 



a. Ad. sk. Gaboon. Piu-chased. 



■b. Ad. St. Gaboon {F. B. N. Walker). E. B. Sharpe, Esq. 



c. Ad. St. Moonda River, Gaboon. M. B. Du ChaiUu [C.]. 



2. Sigmodus caniceps. 



Sigmodus caniceps, Bp. Consp. i. p. 365 {ex Temm. MS. in Mus. 



Lugd.) ; Jard. Cuntr. Om. 1852, p. 140, pi. 94 ; Schl. Nanm. ii. 



pt." 2. p. 27; id. Handl. Dierk. i. p. 286, Atl. Vog. fig. 17; Bp. 



Rev. et 3Ia(i. de Zool. 1853, p. 441 ; Hartl. Om. Westafr. p. 105 ; 



Sharpe, Cat. Afr. B. i. p. 50. 

 Prionops caniceps, Grag, Hand-l. B. i. p. 395 ; Finsch 8f Hartl. Vog. 



Ostafr. p. 364, note ; Heugl. Om. N.O.-Afr. p. 455, note. 



Adult. Entire surface above black with a greenish gloss, the pri- 

 maries barred across with white on the inner web of all except the 

 first one ; crown of head, lores, and feathers in front of the eve 

 pearl-grey ; the entire throat, sides of face, and neck all round deep 

 black, without any metallic gloss like the back ; entire breast white, 

 the abdomen and under tail-coverts light tawny buff; under wing- 



