PBRCNOSTOLA. — SCLATEKIA. 55 



The male described was collected on the Bonasika E,iver. 



Adult female. Entire back, scapulars, and tail dusky brown; 

 upper wing-coverts black margined with bufE at the tips j the 

 tips of the loose feathers on the rump and outer aspect of the quills 

 rust-brown, inner webs of quills dark brown, somewhat paler on 

 the inner edges ; crown of head and nape black ; base of fore- 

 head, a narrow line over the eye, sides of face, sides of neck, 

 throat, and upper breast bright ferruginous, becoming paler on 

 the lower breast, abdomen, sides of body, and under tail-coverts ; 

 under wing-coverts buff, the greater series and quill-lining brown 

 with pale edges to the inner webs; lower aspect of tail dark 

 brown. Wing 68 mm. 



The female described was collected oli the Supenaam River. 



Immature male. Similar to the adult female on the upper parts, 

 but much less brilliant in colour on the sides of the face, throat, 

 and fore-neck; breast, abdomen and under tail-coverts rust-brown. 



The immature bird was collected on the Bonasika B,iver. 



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, Abary River, Berbice 

 River, Anarica River, Arwye Creek, Great Falls Demerara River 

 (McConnell collection). 



Extralimital Range. Surinam (Penard), Cayenne [Gmelin). 



Habits. According to Schomburgk (Reis. Guian. iii. p. 684) this 

 bird is more common in the coast woods than in the woods of 

 the interior. 



Genus SCLATERIA Oberholser. 



Sclateria Oberholser, Proc. Acad. Nat. Sci. Philad. 1899, p. 299. Type 

 S. navia (Gmel.). 



Fig. 27. — Sclateria navia. 



This genus is distinguished by the long and somewhat thin bill 

 and the smooth non-scutellated tarsi- The exposed portion of the 



