( 264 ) 



resemble average specimens of T. albipectas, in the paleness of the lower parts, 

 the tinge of the back, etc. la view of this great iudivitlual variation I consider 

 it impossible to separate the Amazonian race T. taenioptera. 



T. a. albipectus is thns seen to inhabit Cayenne, Surinam, British Ciuiana, and 

 Eastern Yeneznela (Canra), and to range southwards to the main valley of the 

 Amazons (from Para to Manaos) and its sonthern tributaries (Tocautins, Tapajuz, 

 Rio Madeira, and Pnn'is). 



On the Rio Juruil and iu Eastern Peru, however, a siuall, darker lorm is met 

 with. C'f. yov. Zool. xiv. 1907, p. 3. 



[i:i. Odontorhynchus cinereus Pelz. 



Oihintorhynchus cinereus Pelzela, Zur Orn. Bras. i. p. G7 (1867. — Salto do Girao). 



Right bank : Salto do Girao (Natterer). 



Thanks to the kindness of my friend Dr. Lorenz, I have been enabled to 

 examine the type belonging to the Vienna Museum. Though quite distinct 

 generically, Odontorhiinchua is perhaps nearest to Tknjophilus, but may bi' 

 readily distinguished by the strongly curved cnlmen with a very distinct sub- 

 terminal notch. The style of coloration, too, is very different. The type, an 

 immature female, measures : wing 52 ; tail 40 A ; bill \'l mm 



The Paris Museum possesses a male obtained on the Kio Javarri in 

 1846, by Castelnau and Devilie. It is larger (wing .50 mm., tail incomplete), 

 with a]>parently a broader, stronger bill (which, however, is much damaged by 

 the shot), the upper parts rather more of an olive-grey, the cross-bands of the 

 tail much broader, the lower parts dull light grey (instead of white), etc. Until 

 additional specimens come to hand it cannot be decided whether the Javarri bird 

 is specifically identical with 0. cinereus or not.] 



14. Troglodytes musculus clarus Berl. & Hart. 



[Troglodi/les musculus Xaumann, Vwj. Deutsrhl. iii. p. 724. table (1823. — Babia).] 

 Troglodijtes musculus clarus Berlepsch & Hartert, Nor. Zool. ix. p. 8 (I*J02. — Bartica Grove, 

 British Guiana). 



No. 730. cJ ad., Calama, 26. x. 1907. "Iris greyish browu, feet grey, bill 

 black, below greyish red." — Wing 52 ; tail 38 ; bill 14 mm. 



Agrees in coloration with our large series from Panl, Venezuela (Caura, 

 Cumana), Trinidad, etc. This is the first record from the Rio Madeira, and the 

 southernmost locality of the species in Brazil. 



Farther to the south, on the Rio Gnapore (Villa Bella de Mattogrosso), in 

 Western Mattogrosso (Cuyaba, etc.), and Eastern Bolivia, it is replaced by 

 T. musculus rex Berl. & Lev.* 



15. Oporornis ag^ilis (Wilson). 



Si/lvia aijilis Wilson, Anifr. Oriiith. v. p. 64. pi. 39. fig. 4 (1812. — Connecticut ; Pennsylvania near 

 Philadelphia). 



No. 789. ((?) imm., Allianca, T>. xi. 10U7. "Iris browu, feet greyish brown, 

 bill blackish, below grey." — Wing 71 ; tail 47 ; bill llj mm. 



This bird I have compared with specimens from Cambridge (Mass.), Illinois, 



* 7'./7iri'«* Gm. subsp. n. rex Berlepsch & Leverkiihn, (?rttM vi. p. 6 (1890. — Saruaipata, E. BoliviT) ; 

 'Jliri/othorus jilatensis (eTTOie l) I'elzeln, i'«r Oni. Bras. i. p. 48 (part.; Mattogrosso, Cuyabli : specimens 

 examined). 



