52 DEKDROCOLArTIDiE. 



Above imiform dark chcshiut-rcd ; beneath white : -whole length 

 5 inches, wing 2--', tail 2. 



IJah. Upper Amazonia. 



I cannot agree with H. v. Pclzeln in referring this species to the 

 Certhia cinnamomea of the older authors, and have therefore adopted 

 the MS. term mustelina as its title. 



a, b. Ad. sk. Sarayacu, Peru ( Wiitely). Sclater Coll. 



c. c? ad. sk. Pebas, Peru (Hauxivell). Salvin-Godman Cell. 



d. Ad. sk. Pebas, Peru {Castelnau et Be- Sclater Coll. 



23. Synallaxis vulpina. 



Synallaxis vulpina, Peheln, Sitz. Akad. Wien, xx. p. 162, et xxxiv. 



p. 122 ; id. Orn. Bras. p. 37 ; »clat.er, F. Z. S. 18.J9, p. IM 



(Brazil), et 1874, p. 14; id. Cat. A. B. p. 152; Scl. et Salv. 



Nomend. p. 63 ; Tacz. Orn. Per. ii. p. 128. 

 Synallaxis alopecias, Pelz. Sitz. Ak. Wien, xxxiv. p. 101. 

 Synallaxis vulpecula, Scl. et Salv. P. Z. S. 1866, p. 184 (Ucayali), et 



1873, p. 269 (E. Peru). 



Above deep ferruginous red, rump browner ; superciliaries white : 

 beneath pale brownish, throat and breast white : whole length 5-2 

 inches, wing 2*4, tail ^"8. 



Bah. Amazonia and interior of Brazil. 



After comparing together typical specimens of the three species 

 above mentioned, I have come to the conclusion that they maj^ be 

 united. An Upper-Amazonian skin in my collection agrees very 

 fairly with the type of S. alopecias, whereas the skins from the same 

 district upon which S. vulpecula was founded agree better with 

 S. vulpina. At the same time further comparison should be made 

 of specimens of this form from different localities. 



a. Ad. sk. Engenho do Cap. Gama, Sclater Coll. (Authentic 



Matto Grosso, Brazil specimen of S. vulpina.) 

 (Natterer). 



b,c. c? 2 ad. sk. Yquitos, Peru ( niiitehj). Sclater Coll. 



d, e. Ad. sk. Yquitos, Peru. ' H. Whitely [C.]. 



/. c? ad. ; ,(7, Yquitos, Peru ( WVwYe/^) . Salvin-Godman Coll. 

 h. 2 ad. sk. 



i. 2 ad. sk. Lower Ucayali. E. Bartlett [C.]. "l Types of 



j. Ad. sk. Upper Ucayali {Bartlett). Sclater Coll. >■ S. vul- 



k, I. Ad. sk. Upper Ucayali. E. Bartlett [C.]. J pecula. 



m. Ad. sk. E. Peru. Sclater Coll. 



24. Synallaxis nuirufa. 



Synallaxis unirufa, Lafr. Rev. Zool. 1843, p. 290 ; Scl. P. Z. S. 1855, 

 p. 141 (Bogota), 1859, p. 194 (Colombia), et 1874, p. 14; Scl. et 

 Salv. Nomencl. p. 63 ; iid. P. Z. S. 1879, p. 521 (Antioquia). 



Nearly uniform chestnut-red ; beneath rather paler : whole length 

 7 inches, wing 2-4, tail 3-8. 

 Hah. Colombia. 



