370 ZOOLOGICAL EESULTS OF THE EUWENZOEI EXPEDITION. 



appears to be an adult male, but the sex is not indicated. There are three adtdt 

 female specimens from Toro in the Jackson Collection which agree perfectly with the 

 adult female from Mpanga, and all differ slightly from the type in having rather more 

 white on the middle of the breast — a difference which is probably due to sex, or may be 

 individual. 



This species is easily distinguished from C. cyornithopsis Sharpe, from Cameroon, by 

 its rust-red flanks and under tail-coverts. 



[A few of these little birds were found in the Mpanga Forest, where they appeared 

 to inhabit the undergrowth only. — B. B. IF.] 



Cosstpha archeri Sharpe. (Plate XVI. fig. 2, 6 .) 



Cossypha archeri Sharpe, Bull. B. 0. C. xiii. p. 9 (1902) [Ruwenzori]. 

 a-c. J 2 . Mubuku Valley, E. Ruwenzori, 6000-9000 ft., 5th-26th Jan. [Nos. 



109G, 1148, 1185. D. £] 



d-h. 6 2 . Mubuku Valley, E. Ruwenzori, 7000-11,000 ft., 2nd -23rd Feb. [Nos. 



140. B. E. D.\ 2155. G. L.\ 3159, 3165, 3176. B. B. W.] 



i, k. 6 2 . Mubuku Valley, E. Ruwenzori, 6500-8000 ft., 8th & 18th March. 

 [Nos. 1307. D. C. ; 3233. B. B. W.] 



This species was first described from a male procured by Mr. Geoffrey Archer. The 

 female does not differ in plumage from the male, but is slightly smaller — wing 2 - 75-2'9 

 inches. 



[Archer's Robin-Chat was found on Ruwenzori from 6000 ft. up to 13,000 ft. It 

 was one of the few birds that were fairly numerous in the bamboo-zone. It has a 

 curious melancholy piping note, like a cart-wheel which wants oil and creaks each time 

 it comes round to a certain spot. It frequents the undergrowth only and is never seen 

 up in the trees. — E. B. W.~\ 



CossYr-HA heoglini Hartl. 



Cossypha heuglini Eeich. Vog. Afr. iii. p. 758 (1905) ; Jacksou, Ibis, 1906, p. 544 [Toro]. 

 a,b. 6 ? . 120-150 miles W. of Entebbe, 4000 ft., 9th & 11th Dec. [Nos. 2027. 

 G. L. ; 3052. B. B. W.~\ 

 c, d. 2 . Mubuku Valley, E. Ruwenzori, 5000 ft., 20th Jan. [No. 2101, 2102. G. L.] 

 e. d imm. „ „ „ 27th March. [No. 225. B. E. JD.] 



/. 2 imm. Mokia, S.E. Ruwenzori, 3400 ft., 28th April. [No. 2:97. G. L.] 

 g-q. 6 2 et 8 2 imm. Mokia, S.E. Ruwenzori, 3400 ft., 3rd-26th May. [Nos. 



345, 367, 368, 378, 381. B. E. J). ; 1487, 1512, 1526. I). C. ; 3385, 3392. If. B. W.] 



