( 58 ) 



lonjjitndinal stripe which corresponds in length with the pale cinnamomeons 

 spot on the inner weh. 



In F. I. leucopus Sws., on the other hand, the first primary is uniform 

 dusky, and the rufous streak ou the outer web begins with the fourth or fifth 

 primar}-. 



The geographical distribution of the two races is as follows : 



(a) F. I. leucopus Sws. 

 Furnarlus leucopus Swainson, Anim. in Menag. p. 325(1838. — Guiana). 



Hab. British Guiana (fide Swainson ; Brown & Quelch coll. in Brit. Mus.) : 

 at the junction of the Pirara and Mahu rivers (Schomburgk). North Brazil : Forte 

 do Uio Brauco ; Rio Amajau, a tributary of the lower Rio Negro (Natterer). 



Material: 2 <?(?, 2 ? ?, Forte do Rio Branco (Natterer — Mus. Vienna and 

 Berlepsch), 2 adults British Guiana (Brown & Quelch coll. — Mus. Brit.). 



Obs. In the birds from the Rio Branco the rufons stripe on tlie outer welj 

 begins with the fifth, in the Guiana ones with the fourth primary. 



(b) F. I. assimil/s Cab. & Heine. 



Central Brazil : Bahia (many specimens in Mus. Berlepsch, Tring, Vienna, 

 etc.), Lamarao (Robert — Tring). Goyaz : Rio Araguaya (Baer). Mattogrosso : 

 Cuyabd (Natterer). 



N.B. — The specimens from Corumbu, Mattogrosso,* I have not seen ; they 

 may belong to this form or to F. tricolor GiebeLf 



95. Lochmias nematura nematura (Lcht.). 



Myiulhera nematura Lichtensteia, Verz. Dubl. Berliner Mas. p. 43 (1823. — S. Paulo). 



No. 1870. (? ad., Goyaz, March 1906.— Wing 70; tail 53; bill 19^ mm. 



Differs from Sonth Brazilian skins by having the back rather lighter and more 

 olivaceous (less rufescent), and the ground-colour of the under-parts somewhat 

 duller, less chocolate. 



96. Synallaxis frontalis frontalis Pelz. 



Syiiallaxis frontalis (Natterer MS.) Pelzeln, Sitzunysbcr. AL-ail. Wiss. Wieu (math.-naturw. CI.), 

 xxxiv. p. 117 (1859. — " Brasilia,'' so. Goyaz and Mattogrosso ; cf. Pelzeln, Oni. Bras. i. 1867. 

 p. 35). 



Nos. 2247,2252. c? ? ad., Rio Araguaya, June, July lOOC— Wing 55, 54 ; tail 

 78; bill 11 mm. 



Noa. 1863, 1940, 1950, 2062. cJc? ad., Goyaz, March, April 1900.— Wing 55— 

 57 ; tail 73—81 ; bill 10—11 mm. 



No. 2063. ? ad., Goyaz, April 1906.— Wing 53 ; tail 77 ; bill 11 mm. 



No. 1691. (? jr., Faz. Esperanja, December 1906. 



No. 1872. ? jnv., Goyaz, March 1900. 



There are no constant differences between examples from Bahia, Goyaz, Matto- 

 grosso and Paraguay ; perhaps those from Bahia are generally rather lighter, more 

 fnlvous-brown on the back. 



Skins from Entrerios and Tucuman, Argentine, have the greyish brown frontal 

 band rather wider, though some birds from Brazil come very close in that 

 respect. 



• F. leucopus Allen, JSuU. Amer. Mus. v. 189.'?. p. 111. 

 f Zeitschr. pes. Natunriss. xxxi. 1868. p. 11 (Bolivia). 



