( 247 ) 



and tbe cheeks, ear-coverts and sides of neck dingy olive-grey (instead of deep 

 butf). Furthermore, the interscapular region is darker, dull rufescent brown, with 

 a greyish tinge (instead of bright tawny brown). 



I am nnable to discover any other constant differences. Though the type 

 has rather light ochreous under parts, passing into buffy whitish (not " greyish 

 white," as said in the original description) on the throat, the Cayenne bird does 

 not differ in this res])ect from Upper Amazonian examples. 



Tbe two races are, however, closely allied, and represent each other geo- 

 graphically, so that their natural relationship seems more correctly expressed by 

 trinomials. I herewith give the synonymy, together with a short r^snmS of their 

 range and characters. 



(a) JSeopipo cinnamomea cinnamomea (Lawr.). 



Pipru (?) cimmmomea Lawrence, Proc. Acad. Nat.. Sci. PluhvL 18C8. p. 4-29 (1868.— " Upper 



Amazon "). 

 Neupipo rubicimda Sclater & Salvin, P. Z. .S'. Loud. 1869. p. 438, tab. 30. eg. 3. (1869.— Chamiouros, 



Eastern Peru). 

 NeopijHj cimmmomea Sclater & Salvin, P. Z. fi. 1873. p. 283 (Xeberos, Chamicuros, Eastern Peru) ; 



Sclater, Cat. B. Brit. Mus. xiv. p. 303 (part, a-c, Chamicuros ; d, e, Saraya9u, East Ecuador) ; 



Hellmayr, Nui\ Zoul. xiv. 1907. p. 361 (Humaytba, R. Madeira, Brazil) ; idem. I.e. xvii. 1910 



p. 308 (the same). 



Hab. Upper Amazonia, ranging from the head-waters of the Rio Napo 

 (Sarayagu), in Ecuador, south through Eastern Peru (Xeberos, Chamicuros) to the 

 Caraba3'a district (Yahnarmayo) in South-eastern Peru, and east to the left bank of 

 the Rio Madeira (Humaytba), Western Brazil. 



Characters. Upper back (interscapulium) bright tawny brown, without 

 greyish admixture ; lores buff; cheeks, malar region and auriculars somewhat 

 deeper buff, along tbe upper edge of the ear-coverts an extremely narrow streak 

 of olive ; sides of the neck olivaceous. 



Examined. Three adults (including the type of N. rubicunda) from Chami- 

 curos, one from Sarayaeu, East Ecuador, in the British Museum ; one S ad. 

 Humaytba, Rio Madeira, in the Tring Museum ; and one <? ad. from Yahnarmayo, 

 C'araba3'a, S.E. Peru, H. & C. Watkins' coll., in tbe Munich Museum. 



Obs. Tbe bird from Humaytba agrees in coloration with that from Y'ahuar- 

 mayo, but is decidedly smaller and has a slightly shorter bill. 



6 ad. Yahnarmayo, S.E. Peru .... AVing .54 ; tail 39 ; bill 7^ mm. 

 S ad. Humaytba, W. Brazil .... Wing 49 ; tail 35i ; bill 7 mm. 



(J)) Neoijipo cinnamomea helenae Mc(!onnell. 



Xeojnpo heleiine McConnell, Bull. B.O.C. xxvii. p. 105 (1911. — Itnribisce, Briti.sh Guiana). 

 N. cinnamomea (nee Lawrence), Salvin, Iliis 1885. p. 301 (Camacusa, Brit. Guiana) ; Sclater, 



Cat. B. Bril. Muk. xiv. p. .303 (part, f, g, Camacusa) ; Berlepsch, Nov. Zool. xv. 1908, p. 138 



(Ipousin, Rio Approuague, French Cayenne). 



Ildb. I'ritisb Guiana : Camacusa, Ituribisce ; French Guiana : Ipousin, Rio 

 Approuague. 



Churacleni. Upjier back (interscapulium) dull rufesceut iirown, slightly tinged 

 with greyish ; lores greyish white ; cheeks, malar region and auriculars (with tbe 

 exception of small, half-concealed buffy spot on the lower jwrtiou) as well as sides 

 of neck dingy olive-grey. 



