89 



[Vol. xxxi. 



The bill is shorter and stouter than in Acanthis, with the 

 culmen more arched and the basal part of the cutting-edge 

 decurved, almost as in Alario. The species also bears some 

 resemblance to the female of A. alario (Linn.), except that 

 the latter has no white in the wing, and has the tail-feathers 

 dark chestnut with black shaft-streaks and rounded extre- 

 mities. The bill may also be compared with that of the 

 smaller species of Serinus. The combined characters are, 

 however, so different from those of any Finch known to me 

 that I have been obliged to establish a new generic name 

 for it. 



PSEUDACANTHIS YEMENENSIS, Sp. XI. 



Adult male. Much like the male of Acanthis cannabina 

 Linn., but without any crimson on the crown and chest. 

 Head and neck grey, paler on the throat and chest ; mantle 

 chestnut with dark brown middles and sandy-brown edges 

 to most of the feathers ; lower back chestnut with a hidden 

 basal white bar ; rump greyish-white ; upper tail-coverts 

 grey with black middles, the middle pair being long ; sides 

 of the breast chestnut edged with buff; flanks paler ; 

 middle of the breast and belly, as well as the vent and under 

 tail-coverts white ; lesser and median wing-coverts and 

 scapulars dark chestnut ; outer webs and tips of the inner- 

 most secondaries paler chestnut, rest of the quills and greater 

 primary-coverts black, except the basal half of the six inner 

 primaries and the basal part of the inner web of the six 

 outer secondaries, which are white ; tail-feathers black, 

 narrowly edged with pale brownish-white, the outermost 

 pair with a white band on the inner web next to the shaft, 

 the inner pairs with a white streak along the basal part of 

 the shaft, decreasing in length from the fifth pair to the 

 middle pair, in which it is confined to the basal portion. 

 Bill dull slate-colour ; feet dark brownish-grey. Total 

 length, measured in the flesh, 140 mm. ; wing 80; tail 58 ; 

 tarsus 15. Legs and feet very slender. 



Adult female. Similar to the male, but with the grey of the 

 crown, throat, and chest slightly tinged with brownish and 



