DYSITHAMNUS. 23 



The bird described -was collected on the Anarica River. 



Adult female. Differs from the adult male in being rust-brown 

 above, brighter and inclining to chestnut on the head, the absence 

 of the concealed white patch on the back, and the ochreous- 

 brown on the underparts. Wing 61 mm. 



The description of the female is taken from a specimen collected 

 on the Kamakabia River in 1911. 



Breeding-season. Unknown in British Guiana, 



Nest. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Ituribisi River, Supenaam River, 

 Bartica, Kamakabra River, Bonasika River, Makauria River, 

 Anarica River {McConnell collection^ ; Bartica, Kamakusa, 

 Merume Mountains, Takutu River (Whitely) ; Marakka, Mac- 

 casseema, Pomeroon River (W. L. Sclater). 



Extralimital Range. Cayenne, North Brazil, Venezuela, East 

 Peru. 



Habits. Unrecorded in British Guiana. 



362. Dysithamnus saturninus. 



Satuenine Bush-bikd. 



Dysithamnus saturninus Pelz. Orn. Bras. p. 147, 1869 (Borba) ; 



Brabourne & Chubb, B. S. Amer. i. p. 195, no. 1954, 1912. 

 Dysithamnus ardesiacus (nee Scl. & Salv.) Salvin, Ibis, 1885, p. 424 



(Bartica Grove, Camacusa, Merume Mts.); Sclater, Cat. JB. Brit. 



Mus. XV. p. 225 (part), 1890 (Eoraima, Takutu Eiver). 

 Thamnomanes glaucus (nee Cab.) W. L. Sclater, Ibis, 1887, p. 318 



(Marakka). * 



Adult male. General colour above bluish slate-colour, including 

 the head, back, wings, and tail ; inner webs of flight-quills dark 

 brown with pale edges ; tail similar to the back, narrowly margined 

 with white at the tip ; throat black ; breast and sides of the body 

 slate-colour somewhat paler than the back; the abdomen and 

 under tail-coverts with more or less white intermixed like the 

 under wing-coverts. 



Total length 130 mm., exposed culmen 16, wing 71, tail 48, 

 tarsus 19. 



The male described was collected on the Ituribisi River in 

 October 1908. 



Immature male. Differs from the adult male in having the 



