224 FORMICAEIlDiE. 



white, with a few black striiitions ; middle of belly white, flanks 

 and crissum fulvous : whole length 4 inches, wing 2-3, tail 1-3. 



Hah. Costa liica. 



This is another short-tailed species, easily known by its striated 

 head. 



a. 5 ad. sk. Valza, Costa Rica (Canniol). Salviu-Godmau Coll- 



9. Dysithamnus leucostictus. 



Dysithaiuuiis leucostictus, Sdater, P. Z. S. 1858, pp. 66, 223, pi. exc. 

 (Rio Napo) ; id. Cat. A. B. p. 177 ; Scl. et Salv. Nomencl. p. 71 ; 

 Tacx. et Bed. P. Z. S. 1885, p. 99 (Ecuador). 



Above clear brown ; head rufesccnt ; sides of head and body 

 beneath slaty, with large and conspicuous shaft-spots of pure white 

 on tlie sides of the head, throat, and breast, and slight whitish 

 striations in the middle of the belly ; flanks brownish ; bill and feet 

 blackish : whole length 5-2 iuches, wing 2-7, tail 2. 



Hah. Eastern Ecuador. 



This is a very distinct form, and may be a Thamnophilus. 



a. Ad. sk. Rio Napo, Ecuador. Sclater Coll. 



(T-^'pe of the species.) 

 h. Ad. sk. Rio Napo. Purchased. 



10. Dysithamuus schistaceus. 



Tbanmophilus fuligiuosus, Lctfr. et (VOrb. Syn. Av. i. p. 10; d'Orb. 



Voy., Ois. p. 170, pi. V. fig. 1. 

 Thamuopliihis .schistaceus, d'Orb. Voy., Ois. p. 170 ; 8cl. P. Z. S. 



1855, p. 148 ; Pelz. Om. Bras. p. 77. 

 Dysithamnus schistaceus, *S'c/. et Salv. P. Z. S. 1867, pp. 756, 078, 



1873, p. 273 (E. Peru), et 1879, p. 624 (Bolivia) ; iid. Nomencl. 



p. 71 ; Tacz. Om. Per. ii. p. 31. 



Above uniform pale schistaccous, rather blackish on the head : 

 beneath similar, but paler, especially on the throat and middle line ; 

 under wing-covcrts white ; bill and feet plumbeous : whole length 

 5'7 inches, wing 2"G, tail 2. Female. Above brown, wings and 

 tail darker, cap rufous : beneath much paler and more ochraccous. 



Hub. Peru and Bolivia. 



Chyaveta.s, E. Peru {Bartlett). Salvin-Godmau Coll. 



Chyavetas, E. Peru. E. Bartlett [C.]. 



Chyavetas, E. Peru {Bartlett). Sclater Coll. 



Chamicuros, E. Peru [Hauxicell). Gould CoU. 



Yquitos, Upper Amazons Salvin-Godman Coll. 

 ( WMtely). 



Yurimaguas, Peru {Bartlett). Sclater Coll. 



Pebas, E. Peru {llauxioell). Sclater Coll. 



Samiria, E. Peru (Hauxivell). Salvin-Godmau Coll. 



Bolivia (?). Piu:chased. 



