( 41 ) 

 60. Knipolegus orenocensis Beil. 



Cnipolegus orenocensis Berlepsch, Ibis, 1884, p. 4H3, tab. xii. (Angostura : Orinoco) ; Berlepsch & 

 Hartert, Nov. Znol. ix. 1902. p. 35 (Altagracia, Caicara, Capuchin : Orinoco). 



Nos. 2321, 2322. (?c?ad., Rio Araguaya, July I9(i(5.— Wing 85, 84 ; tail TT ; 

 bill 17, 16J mm. 



These birds agree exactly with a series of males from the Orinoco in the Tring 

 Museum, except that the bill is a very little narrower and slenderer. In coloration 

 there is not the slightest difference, the back and uuder-surface being sooty-grey 

 with a faint olivaceous hue, the pileum rather more blackish, etc., as in the 

 Orinoco series. The first primary is quite normally shaped. 



This is one of the most interesting species in the present collection, and quite 

 an unexpected addition to the Brazilian avifauna. K. orenocensis was hitherto only 

 known as an inhabitant of the Orinoco valley. 



61. Copurus colonus colonus (Vieill.). 



Musckapa colotius Vieillot, Nouv. Did. xxi. p. 448 (1S18. — ex Azara, No. 18(1 : Paraguay). 



Nos. 1885, 2048. c?c? ad., Goyaz, March, April 1906.— AViug 81, 83 ; tail 160, 

 170; bill 9 mm. 



No. 1890. ? ad., Goyaz, March 1906.— Wing 79; tail 132; bill 10 mm. 



No. 1804. (J ad., Faz. EsperanQa, February 1906.— Wing 84; tail 161; bill 

 9J mm. 



The female differs from the males by its smaller size, shorter median rectrices, 

 and by having the cap decidedly darker, smoky greyish, contrasting with the white 

 frontal band. 



The differences between C. c. colonus and C. c. fuscicapillus Scl. are well 

 pointed out by Mr. Ridgway,* but their geographical distribution is not correctly 

 given. C. c. colonus is confined to Paraguay and South Brazil (from Bahia, Goyaz, 

 and Mattogrosso southwards) ; while (7. c. fuscicapillus ranges from Colombia 

 (Bogota) through Eastern Ecuador to Northern and Central Peru. 



62. Todirostrum cinereuin coloreum Ridgw. 



\Todus cineretis Linnaeus, fi?/st. Nat. xii. 1. p. 178 (17C6. — ex Edwards, Glean, ii. p. llo, tab. 'li'<2, 



fig. inf. — Surinam).] 

 Todirostrum. cinercum coloreum RiJgway, Proc. Biol. Soe. Tl'n.s//. xix. p. 115 (1906.— Corumba, 



Mattogrosso). 

 T. cinereuiH (nee Linn.) Pelzein, Ziir Orii. Bra.'i. ii. 18G8. p. 100 (part. ; Rio Parana, Ciiyaba, 



Caiyara, S. Vicente) ; Allen, Bull. Anter. Mus. iv. 1892, p. 332 (Chapada, Corumba). 



No. 2036. ? ad., Goyaz, April 1906.— Wing 42i ; tail 40 ; bill 14 mm. 



This bird as well as Nattercr's series from Mattogrosso and the Rio Parana 

 differ from T. c. cinercum of northern South America by rather brighter lower 

 parts, somewhat longer white tip to the outermost rectrix, and by having the back 

 mainly light olive-green, contrasting with the dark slaty pileum and nape. Two 

 specimens from Chajjada in the British Museum are quite similar. 



* ISirds Nurth and Middle America, iv. 1907, pp. 350-51. 



