[). nrsrrnAMxus. 225 



11. Dysithamnus ardesiacus. 



Dysitliamnus scliistaceus, Scl. P. Z. S. 1S6S p. 60 (Rio Napo) et 



p. 222; id. Cat A. B. -p. 178. 

 Dvsithamuus ardesiacus, Scl. et Sale. P. Z. S'. 18G7, p. 756, et 1873, 



p. 274 (E. Peru) ; iid. Xome?icl. p. 71 ; Tacz. P. Z. 8. 1874, p. 530 



fC. Peru) ; id. Oni. Per. ii. p. 32; Salv. Ibis, 1885, p. 424 (Brit. 



Guiana). 



Above plumbeous, wings and tail blackish with slight plumbeons 

 edgings ; tail very slightly tipped \vith white : beneath paler, throat 

 blackish ; under wing-coverts plumbeous ; bill and feet blackish : 

 whole length 5 inches, wing 3, tail VS. Female. Above brown, 

 wings and tail rufescent : beneath ochraceous, throat pale cinereous. 



Hab. Guiana, Amazonia, and E. Ecuador. 



This species is distinguished from B. schistaceus by its darker 

 colour, blackish throat, and the slight whit^ terminations of the 

 tail-feathers. 



SalviiHGodnian Coll. 



Salvin-Godmau Coll. 



SalVin-Goduian Coll. 



Salviu-Godmau Coll. 



Salviff-Godmau Coll. 

 Sclater Coll. 

 Salvin-G6daian Coll. 



S^lat^r Coll. 



E. BArtlett [C.]. 

 Salvin-Godmau Coll. 

 fSclater Coll. 

 (Tvpes of the species.) 

 Purchased. 



12. Dysithamnus unicolfir. 



Dysithamnus unicolor, Schtir, P. E. S. 1859, p. 141, et 1860, p. 89 

 (Ecuador); id. Cat. A B. p. 178; Scl. et Salv. Komencl. p. 71 ; 

 iid. P. Z. S. 1879, p. 525 (Aotioquia). 



Thamnophilus unicolor, Berl. et Tac-z. P. Z. S. 18S4, p. 301 (Ecuador). 



Above and beneath uniform dark plumbeous : inner webs of wing- 

 feathers paler, whitish ; bill and feet black : whole length G inches, 

 wing 3, tail 2-5. Female. Above reddish brown, cap brighter ; sides 

 of head slaty : beneath ochraceous brown ; throat pale schistaceous. 



Hah. Western Ecuador and Colombia. 



The absolutely imiform dark plumbeous colour distinguishes this 

 species from the two preceding. 



a, b. (S 2 3d. sk. Pallatanga, Ecuador (Fraser). Sclater Coll. 



(Types of the species.) 

 c. c? ad. sk. Pallatanga, Ecuador. L. Eraser [C.]. 



VOL. XV. a 



