( 17 ) 



Hab. : Western Mattogrosso : Villa Bella de Mattogrosso, Rio Gnapor^ 

 (Natterer), Corumba, Uruci'im (Borelli). Eastern Bolivia : Santa Craz de la Sierra 

 (G. Garlepp). 



Material. 



(a) Vienna Museum, Natterer coll. Type.s of species : 



c? ad., Villa Bella de Mattogros.so, July 28 



? ad., „ „ „ „ October 10 . 



? ad., ,, „ „ „ October 10 . 



{b) Turin Museum : 

 ? ad., Corumbii, Mattogrosso, Borelli coll. 

 (? ad., Uruciim ,, u ,; - . 



<? (?) ad. „ „ „ „ . . 



(c) Tring Museum (formerly in the Nehrkorn collection) : 

 Adult (not sexed), Santa Cruz de la Sierra, Bolivia . . ,54 42 16 mm. 



4. Thryothorus genibarbis intercedens n. subsp. 



ThryiAhorus melanos (nee Vieillot) Pelzeln, Zur OrnilJi. Bras. i. 1867. p. 48(p.'irt. : Tenente Borges, 



Goiaz, Cuyabi, Engenho do Gama, Mattogrosso). 

 Thri/othorus genibaiUs (nee Swainson) Allen, Bui/. Anier. ilus. iii. 1891. p. 343 (Chapada. 



Mattogrosso). 



No. 2167. "d"' ad., Rio Thesouras, 600 metr., May 1006.— Wing 62 ; tail 60; 

 bill 17i mm. Type of subspecies. 



No. 2168. "c?" imm., Rio Thesouras, May 1906.— Wing 58; tail 53i ; bill 

 16i mm. 



No. 1702. ? juv., Faz. Esperan^a, 700 metr., January 1906. 



Adult. Differs from T. g. genibarbis Sws.* from Bahia, Para and Borba 

 (Lower Rio Madeira) by its considerably paler coloration, the top of the head and 

 nape being dull earthy brown (instead of deep sooty), and the back clear cinnamon- 

 rufous (instead of chestnut-rufous). The under parts are also generally lighter, 

 especially the sides of the belly of a paler buffy brown. The bill is weaker and 

 slenderer. 



Besides the' specimens in the present collection, I have examined seven others 

 obtained by Natterer in Goyaz and Mattogrosso. They measure as follows : 



Wing. Tail. Bill. 



Mus. Vienna, " ? " ad., Cidade de Goiaz, August 8, 1823 . 



,, ,, (? ad. „ ,, „ September 4, 1823 



„ Munich, ? ad. „ „ ,, September 4, 1823 



,, Vienna, ? (?) ad., Faz. do Tenente Borges (between 



Bomfim and Meia Poute), July 17, 1823 . 

 „ Vienna, ? ad. Cuyaba, Mattogrosso, January 9, 1824 . 

 „ „ S ad., Villa Bella de Mattogrosso, October 23, 



1826 



„ Vienna, i ad., Engenho do Cap. Gama, Mattogrosso, 



August 2, 1826 62 57 i: 



63 58 17 mm. 



* Thri/othorus geniharhis Swainson, A7ibn, in, Menag. p. 322 (183S— "Brazil "). 



