W. E. OGILVIE-GRANT— AVES. 425 



b-d. 6 2 imm. Mokia, S.E. Ruwenzori, 3400 ft., 4th-26th May. [Nos. 37 'J. 

 B. E. I). ■ 3322, 3359. B. B. IF] 



e-g. d 2 imm. Mokia, S.E. Ruwenzori, 3400 ft,, 11th & 12th June. [Nos. 411, 

 448. B. E. D.; 3467. B. B. IF] 



Adult. Iris whitish ; bill and feet black. 



Immature. Iris light grey ; bill reddish-brown ; feet dark brown. 



The present series includes all stages of plumage, from the immature to the 

 adult. 



A male (No. 379) still in partially immature plumage has been marked " breeding' 

 by Mr. Dent. Only the second primary-quill in each wing and the right-hand outer 

 tail-feather are in the adult plumage — i. e., black with white spots. 



[A few examples of the Didric Cuckoo, so called from its note, were seen on the 

 plains at the south end of Ruwenzori and in the Upper Semliki Valley. They were 

 breeding at the end of June. — B. B. IF.] 



Chrysococctx klaasi (Steph.). 



Chrysococcyx klaasi Reich. Vog. Afr. ii. p. 98 (1902) ; Stark & Sclater, B. S. Afr. iii. p. 18G 

 (1903) ; Sharpe, Ibis, 1907, p. 437 [Cameroon]. 



a. 6. Mubuku Valley, E. Ruwenzori, 6000 ft., ISth Jan. [No. 1167. D, C] 



b. d imm. Mokia, S.E. Ruwenzori, 3400 ft., 21st May. [No. 2380. G. L.] 



c. d. 6. „ „ ,, 1st & 21st June. [Nos. 407. B. E. I)., 



1663. D. C] 



Iris dark brown ; bill olive-green ; feet green or olive-green. 



[Only one specimen of Klaas' Cuckoo was seen on Ruwenzori, and was procured 

 just below the forest-line. A few were seen in the acacia-forest at the south end. 

 They were always very shy birds and difficult to approach. — B. B. IF.] 



Chrysococctx flavigularis Shelley. 



Chrysococcyx flavigularis Shelley, P. Z. S. 1879, p. 679, pi. 1. ; Reich. Vog. Afr. ii. p. 100 

 (1902) ; Sharpe, Ibis, 1907, p. 437 [S. Cameroon]. 



a. 2 ■ Mawambi, E. Congo Forest, 2500 ft., 29th Oct. [No. 575. B. E. D.] 



When volume xix. of the 'Catalogue of the Birds' was written in 1891 this species 

 was not represented in the British Museum. The type, a male, which was procured at 

 Elmina, Fantee, is now in the Stuttgart Museum, and not in the British Museum as 

 stated by Dr. Sharpe ('Ibis,' 1907, p. 437). A male was procured by Mr. Bates at the 

 River Ja, S. Cameroon. 



[The only specimen seen was obtained in the Congo Forest in an open clearing 

 near a village. — B. B. IF.] 



vol. xix. — part iv. No. 56. — March, 1910. 3 l 



