256 Proceedings of the Biological Society of Washington. 



Grallaria ruficapilla albiloris. Peru: Levanto (near Chaehapoyas), 1 

 (J 1 ; Tabaconas (near Huancabamba), 1 $ . 



Grallaria ruficapilla ruficapilla. Ecuador: Zaruma, Prov. Loja, 1 9 ', 

 " Ambato," 1; Gualea, 1 cJ 1 , 1 ?; Colombia: 16 specimens of both sexes. 



Measurements. 



Culmen. 



24-25 



23 



24 



24 



23 



Grallaria watkinsi 1 — 



Grallaria ruficapilla albiloris 2 ... 



Grallaria watkinsi 3 



Grallaria ruficapilla albiloris 4 .. 

 Grallaria ruficapilla ruficapilla 6 



Remarks.— Our material clearly indicates the intergradation of rufica- 

 pilla ruficapilla with albiloris. Of the latter, a specimen from Levanto, 

 near Chaehapoyas, received by us from von Berlepsch and labeled by him 

 "Grallaria albiloris," may be considered topotypical of that form, since 

 Taczanowski himself records specimens from near Chaehapoyas (Orn. 

 Perou, II, p. 83). Callacate, the type-locality of albiloris, is on the western 

 slopes, Levanto on the eastern slopes of the Marafion Valley. 



A specimen from Tabaconas, Peru, further north on Amazonian drain- 

 age, has more black on the breast, less white on the lores, and a darker 

 crown than the Levanto bird, and thus shows a definite approach toward 

 ruficapilla, while a specimen from Zaruma, Prov. Loja, has the white lores 

 of albiloris, but in other respects agrees with ruficapilla. The lores are 

 whitish also in a Gualea specimen, and in two from Ricaurte. southwestern 

 Colombia. Taczanowski (I. c.) comments on the resemblance of west 

 Ecuadorian specimens to albiloris, and we may, I think, accept the inter- 

 gradation of that race and ruficapilla as essentially proven. 



I dwell somewhat upon this fact for it has an interesting bearing on the 

 status of the bird here described. Zaruma, whence comes the specimen 

 of ruficapilla mentioned above, is only about sixty miles from Milagros, 

 the type-locality of watkinsi, but the latter is less like the Zaruma bird 

 than it is like the Levanto specimen from the Maranon Valley. Milagros 

 is on the Pacific slope of the Western Andes, Zaruma on the eastern side 

 of the same range. Whether the two localities are connected faunally, I 

 am unable to say, but the specimens from Milagros show characters which 

 suggest the complete segregation of a form which, while representing 

 Grallaria ruficapilla, is specifically distinct from it. It gives me peculiar 

 pleasure to dedicate this interesting new bird to its collector, Mr. Harry 

 Watkins, who for nearly twenty years has devoted himself to zoological 

 research in Peru, and who for the past three years has been the efficient 

 representative there of the American Museum of Natural History. 



i 5 males from Milagros, Peru. 



2 1 male from Levanto, Peru. 



3 1 female from Milagros, Peru. 



4 1 female from Tabaconas, Peru. 

 6 1 female from Zaruma, Ecuador. 



