W. E. OGILVIE-GEANT — AVES. 371 



d. 



r-x. 6 et 6 ? imm. Mokia, S.E. Ruwenzori, 3400 ft., lst-16th June. [Nos. 404, 



tl. A. 



412, 420, 435, 465. R. E. D. ; 3460, 3489. R. B. W.] 



Iris brown or dark hazel ; bill and feet black. 



Immature birds have the greater wing-coverts and innermost secondary quills narrowly 

 tipped or spotted at the extremity with pale orange-buff. The development of the 

 light chestnut nuchal collar and the colour of the mantle appears to be vary greatly in 

 different individuals, irrespective of age; but, as a rule, the older birds have the mantle 

 greyer, while in younger examples it is strongly washed with rufous-olive. 



[Heuglin's Robin-Chat was seen throughout the journey from Entebbe to Ruwenzori. 

 It was very plentiful ou the plains around the south end of the mountains, but was 

 never seen on the range above 5500 ft. This bird has some wonderful flute-like notes, 

 but too disconnected to be really called a song. — R. B. W.~\ 



Cossypha bartteloti Shelley. 



Cossypha bartteloti Shelley, Ibis, 1890, p. 159, pi. v. [Yambuya]. 

 Cossypha cyanocampter bartteloti Reich. Vog. Afr. iii. p. 758 (1905). 



a. d . Mpanga Forest, Fort Portal, 5000 ft., 20th Sept. [No. 3587. R. B. W.] 



Iris dark brown ; bill black ; feet dark brown. 



This specimen, a fully adult male, resembles the type of C. bartteloti from the Aru- 

 wimi River both in its paler coloration and smaller size. Culmen 075 inch, wing 3*2, 

 tail 2 - 6. The olive-brown feathers of the back are fringed with dark bluish-slate-colour, 

 but in this respect it resembles a fine male example of C. cyanocampter (Bonap.) 

 from the River Ja, Cameroon. Most of the Cameroon birds have the chin, throat, and 

 breast darker cinnamon-rufous than in C. bartteloti, but this is by no means invariably 

 the case, and it seems that the latter form is barely separable from C. cyanocampter 

 except in size. C. periculosa Sharpe, from the River Danger, Gaboon, is another 

 doubtfully distinct form, with the mantle a trifle browner and darker than in typical 

 C. cyanocampter. The type-specimen appears to be fully adult and the slightly darker 

 colour of the back is probably individual. 



Iu the type-specimen of C. bartteloti the middle tail-feathers are missing, and the figure 

 given in the ' Ibis' is therefore misleading, as it represents a bird with a cinnamon- 

 rufous tail. 



Cossypha melanonota (Cab.). 



Cossypha verlicalis melanonota lleich. Vog. Afr. iii. p. 762 (1905) ; Sharpe, Ibis, 1908, p. 124 

 [S. Cameroon]. 



a. 6 . Mubuku Valley, E. Ruwenzori, 5500 ft., 21st Feb. [No. 1252. I). C] 



b. d imm. Mokia, S.E. Ruwenzori, 3400 ft., 8th May. [No. 2349. G. Z..] 



3d 2 



