DIGENKA. 229 



coverts and axillaries rufous buff ; abdomen, vent and under tail coverts white ; 

 bill blackish brown, paler at tip ; lower mandible yellowish horny ; legs and 

 feet fleshy. 



Length. $'2$ inches; sving 2-9; tail 2 ; bill at front 0-45; tarsus 0-6. 

 (Hume.) 



Hab. Sikkim. Nothing is known of its habits and nidification. 



265. Siphia Olivacea, (Hume) Sharpe, Cat. B. Br. Mus. iv. p. 457. 

 Cyorni-s olivacea, Hume, Str. F. 1877, p. 338 ; id. Dav. and Hume, Str. F. 

 1878, p. 229. The OLIVE-BACKED FLY-CATCHER. 



Above dull olivaceous, the head and nape very slightly tinged greyish ; 

 sides of the head, cheeks and ear coverts ashy grey, with paler shaft streaks ; 

 under surface whitish ; the breast and flanks tinged grey ; tail rufous brown, 

 brighter on the outer webs of the quills, edged with fulvous brown arfd tinged 

 with rufous brown externally; bill black; iris brown ; legs pinkish white. 



Length. 5*8 inches ; wing 3 ; tail 2*5 ; tarsus 075 ; culmen 0*8. 



Hab. Tenasserim, Java, and Borneo. According to Mr. Davison, this 

 species, like its other congeners, keeps to the forests or its outskirts, and is usually 

 seen singly. They perch on commanding twigs, whence they capture passing 

 insects with short sharp flights, returning to the same perch. 



Gen. Digenea. Hodgs. 



Bill narrow, not as long as hind toe and claw ; nostrils covered by rictal 

 bristles and frontal plumes ; wings pointed and long, but not reaching to the 

 tip of the tail ; hind claw moderate and curved, about equal in length to the 

 hind toe. 



266. Digenea leucomelanura, (Biyth). Sharpe, Cat. B. Br. 



Mus. iv. p. 459. Siphia leucomelanura, JBlyth, J.A.S.B xvi. p. 126; 

 Jerd. B. Ind. i. p. 479, No. 320 ; Hodgs., icon. ined. Passer es App. pi. 1 13. 

 Siphia tricolor, Blyth, J. A. S B. xvi., p. 126; Jerd. B. Ind. i. p. 478, 

 No. 318; Brooks, Str. F. 1877, p. 471. The SLATY FLY-CATCHER. 



PLATE, Fig. i. 



Above dull slaty blue, brighter and more ashy blue on the forehead and 

 crown; ear coverts dark slaty blue; a narrow frontal line, lores and feathers in 

 front of and below the eye and the fore part of the cheeks slaty black ; wing 

 coverts slaty blue ; the greater series blackish brown externally, washed, with 

 slaty blue; secondaries the same; primaries brown, edged with ochraceotis 

 brown ; upper tail coverts darker than the back ; tail black, white at base, the 

 two centre feathers entirely black ; throat white, rest of under surface of body 

 ashy grey, the flanks dull greyish ; sides of upper breast slaty blue ; the centre 

 of abdomen white ; under tail coverts dusky blackish, with longitudinal white 

 central streaks ; under wing coverts and axillaries pale ochraceous, with 

 blackish bases to the feathers ; bill dusky ; feet brown ; iris dark brown, 

 31 



