404: ZOOLOGICAL RESULTS OF THE RUWENZORI EXPEDITION. 



of the plumage is of a bluer-grey; the crest shorter; and the edges of the wing- 

 feathers margined with blue. 



rf . Iris dark brown ; bill and feet slate-blue. 



2 . Iris dark brown ; bill dark horn-colour ; feet slate-blue. 



d . Total length ca. 6'5 inches ; wing 3'0 ; tail 3 - 2 ; tarsus - 6. 



5. „ 6-3 „ ; „ 2-9; „ 2-8; ., 06. 



An allied species, T. Mbaliensis, has recently been described by Mr. Alexander from 

 the Kibali River \cf. Bull B. O. C. xix. p. 88 (1907)]. 



[The Duke of Bedford's Flycatcher was a common bird in the forest between 

 Irumu and Mawambi. Its note exactly resembled that of Terpsiphone emini, and the 

 two species might often be seen darting out from the same tree at passing insects. 

 T. emini was also found in the Mpanga Forest, but T. bedfordi was met with only in 

 the Eturi and Congo Forests. — B. B. IF.] 



Tebpsiphonb duchaillui Cassin. 



Muscipeta duchaillui Cass. P. Ac. Philad. 1859, p. 48 [Camuia R., Gaboon]. 

 Tchitrea viridis Reich. Viig. Afr. ii. p. 504 (1903) [part.]. 



a. 6 . Mokia, S.E. Ruwenzori, 3400 ft., 9th June. [No. 3461. it. B. W.~] 



Iris dark brown ; bill and feet light blue. 



This adult bird is in nearly black and white plumage, but some of the feathers of 

 the back are partially chestnut ; the five outer and shorter pairs of tail-feathers are 

 white, more or less bordered with black and with black shafts. 



Terpsiphone suahelica Reichenow. (Plate XIX. fig. 13, egg.) 

 Tchitrea perspicillata suahelica Reich. Yog. Afr. ii. p. 509 (1903). 



a. 6 . 80 miles W. of Entebbe, 3800 ft., 2nd Dec. [No. 3021. B. B. I)'.] 



b. 6 . Mokia, S.E. Ruwenzori, 3400 ft., 28th April. [No. 1449. 1). C] 



r-m. J 2 . Mokia, S.E. Ruwenzori, 3400 ft., 5th-24th May. [Nos. 318, 341. 

 B. E. I).; 1504, 1553, 1569, 1585, 1609, 1611, 1«20. I). C- 2359. G. L.] 



n-w. d 2 ■ Mokia, S.E. Ruwenzori, 3400 ft., lst-29th June. [Nos. 406, 413, 422. 

 426, 458. B. E. I).; 1607, 1670, 1711. I). C. ; 3449, 3493. B. B. IF.] 



x. 2 ■ Fort Beni. Semliki Valley, 3000 ft., 23rd July. [No. 3518. B. B. IF.] 



Great interest attaches to the changes of plumage in this species. Both Mr. Alex- 

 ander and Prof. Neumann have recently devoted much attention to a study of the series 

 in the British Museum. In naming the specimens in the present collection I have 

 followed the views of the former, with which I agree. All have the outer tail-feathers 

 chestnut, with the exception of specimen No. 1553, in which some of the outer tail- 

 feathers as well as the middle pair are mostly white. This specimen may be a 

 hybrid with T. emini. 



