Chapman — New Birds Peru, Bolivia, Brazil, Colombia. 261 



the extension of the large spots on the breast to the abdomen at once marks 

 it as belonging to the Colombian form. The differences which distinguish 

 birds from Bolivia and southern Peru from Colombian and Ecuadorian 

 specimens are evidently shown, in part at least, by specimens from Garita 

 del Sol on the Amazonian slopes of the Andes, east of Lima, Berlepsch 

 (P. Z. S., 1896, p. 376) remarking that a pair of birds from this locality 

 resemble specimens from Bolivia. He also here comments on the char- 

 acters shown by the Colombian bird and, misled by Lafresnaye's state- 

 ment that the type of triangularis came from Bolivia, he described the 

 Colombian form as " D. triangularis bogotensis," a name which is obviously 

 a pure synonym of Xiphorhynchus triangularis triangularis. 



Since four specimens from Zamora, in southeastern Ecuador, are essen- 

 tially typical of true triangularis, it is evident that if this form intergrades 

 with bangsi it must do so between Zamora and Garita del Sol. It seems 

 particularly appropriate to name this strongly marked race in honor of 

 Mr. Outram Bangs, not alone in recognition of the services he has so long 

 rendered neotropical ornithology, but also because his studies of the La- 

 fresnaye types now in the collection of which he has charge, have already 

 thrown, and promise to continue to throw, much light on problems which 

 only a study of the type concerned can solve. 



Thripobrotus layardi madeiras, new subspecies. 



Subspecific characters. — Similar to Thripobrotus layardi layardi (Scl.), but 

 ground color of the under parts browner; its streaks somewhat narrower 

 and tinted with buff; the unspotted throat area smaller and buffy instead 

 of white; the abdomen less streaked. Wing 95; tail 78.5; culmen 27 mm. 



Type.— No. 148,455, Am. Mus. Nat. Hist., & ad., Porto Velho, Rio 

 Madeira, Brazil, April 3, 1915; Collins-Day Exp., Geo. K. Cherrie. 



Specimens examined. — Thripobrotus layardi madeira?. Brazil: Type lo- 

 cality, 2 cT', Barao Melgaco, Gy-Parana, Brazil, 1 9 im. 



Thripobrotus layardi layardi. Brazil: Utinga, near Para, 1 d\ 1 9 

 (topotypes). 



Thripobrotus fuscicapillus. Bolivia: Todos Santos, Rio Chapare, Prov. 

 Cochabamba, 1 cT. Peru: Astillero, Rio Tambopata, 1 9 ', Rio Cosireni 

 (lower Urubamba), 1 d\ 



Remarks. — Hellmayr (Verh. Orn. Gesell. Bayern, XI, 1912, p. 161), 

 after comparing Peruvian specimens with the type of Thripobrotus fuscica- 

 pillus (Pelz.), considers them inseparable from that species and. accepting 

 this conclusion as valid, it is clear that our birds from Porto Velho are not 

 referable to that form, which is represented in our collections by three 

 examples. Nor does the material at hand indicate intergradation of fus- 

 cicapillus with layardi through the race here described, which, although 

 slightly approaching fuscicapillus, is nevertheless much nearer to layardi. 



A female from Barao Melgaco, on the Gy-Parana, still wears most of the 

 juvenal plumage. The forehead and sides of the head are spotted with 

 fulvous, the nape and sides of the hind head are slightly streaked with the 

 same color. The under parts agree in general tone of color, but are less 

 sharply streaked and the central stripes are whiter. Doubtless because 



