8 Mr. C. E. Hellmayr on the 



one each from Santarem and the Rio Negro have a narrow 

 white stripe along the shaft at the base of the outermost 

 rectrix, but in other specimens from the same localities it is 

 altogether wanting. Messrs. Chapman and Riker record 

 P. a. flaviceps (misprint for flavicollis) from Santarem, but 

 a single S a d. collected by Natterer belongs to the typical 

 P. a. aureola. The examples from Para and the Rio Negro 

 are also absolutely identical with others from Surinam. 



The measurements of the males from the different localities 

 are as follows : — 



3 S c? ad. Rio Negro (coll. Natterer, Mus. Vindob.). . 

 c? ad. Santarem (coll. Natterer, Mus. Vindob.) .... 

 2 3 S ad. Palheta, Para (coll. Steere, Mus. Tring) . . 

 1 3 ad. Guanoco, Orinoco Delta (coll. Andre, Mus. 

 Tring) 



9 c? c? ad. Surinam (Mus. Tring, Vindob. & Berlepscb) 

 4c? c?ad. Brit. Guiana (Mus. Berlepscb & Vindob.) . . 



There is hardly any doubt that the birds figured by 

 Edwards (/. c.) and D'Aubenton, PI. enl. tab. 34. fig. 3, 

 •were simply colour-varieties of P. aureola. The type of 

 P. dubia Mad. is evidently a discoloured specimen of the 

 same species. 



1 a. PlPRA AUREOLA FLAVICOLLIS. 



Pipra flavicollis Sclater, Contrib. Ornith. for 1851 (publ. 

 1852) p. 143 [Barra do Rio Negro] ; Sclater & Salvin, 

 P.Z. S. 1867, p. 579 [" Mexiana and north side of the 

 Amazons " : cf. obs. below] . 



Pipra aureola Pelzeln, Orn. Brasil. ii. (1868) p. 126 (part.) 

 [Borba, R. Madeira]. 



Habitat. N. Brazil, Lower Amazons : Barra do Rio Negro 

 {Wallace) ; Borba on the Rio Madeira (Natterer). 



Typical locality. Barra do Rio Negro. 



Type. £ ad. Barra do Rio Negro, in Brit. Mus. (ex coll. 

 Sclater). 



Obs. — The distribution of this well-marked form is still 

 very imperfectly known. It was originally described from 

 Barra do Rio Negro, but afterwards Sclater and Salvin 



