476 Oil neiv Genera and Species of Capitonidse. 



the smooth base to the lower mandible (so different from the 

 sulcated mandible of P. dubins) and by the less evident tuft 

 of bristles on the chin. 

 Type Erythrobucco rolleti. 



2. Melanobucco, gen. n. liv^ax^^^^/i/. r 



Wants the dense tnft of bristles which conceals the chin- 

 angle in Pogonorhynchus and Erythrobucco. Differs from 

 Tricholcema in wanting the hairy plumes on the breast. 



Type M. hidentatns (Shaw). 



The species to be assigned to Melanobucco are : — M. biden- 

 tatus, M. (equal or'i alls, M. melanopterus , M. levaillanti, M. 

 leucocephalus , M. albicauda, M. senex, M. leucogaster, M. 

 abyssinicus, M. torcpuatus, M. irroratus, M. vieilloti, and 

 M. undatus. 



One of these species is undescribed, and may be charac- 

 terized as follows : — 



Melanobucco ^quatorialis^ sp. n. 



Adult male. Similar to M. bidentatus, but having the band 

 on the wing much more restricted, and of a rosy colour in- 

 stead of scarlet. Total length 9 inches, wing 4"1. 



Hab. Hparo, in Equatorial Africa [Emin Pasha) ; Niam- 

 niam country [Bohndorff). 



Type in the British Museum. 



All the remaining species, usually placed in Pogonorhyn- 

 chus, should, in my opinion, be placed in Tricholaema, which, 

 in addition to the hairy feathers on the breast, has also a 

 yellow-spotted plumage. The following species belong to 

 this genus : — T. hirsutum, T. stigmatothorax, T. melano- 

 cephalum, T. lachrymosum, T. affine, T. leucomelan, T. diade- 

 ■matum, T. frontatum. 



3. Heliobxtcco, gen. n. 



The type of tliis genus is H. bunapartii, which has always 

 been placed with G. caJvus in the genus Gymnobucco. It 

 differs, however, in its feathered crown and feathered ear- 

 coverts. 



