Birds of Fernando Po. 377 



native huts of Bilelipi, a little " Boobie " village, where we 

 pitched our tent prior to ascending the mountain. We 

 constantly heard this bird about the camp, especially after a 

 fall of rain — its beautiful trill of notes, like those of C. brevi- 

 pennis (Alexander, Ibis, 1898, p. 83), never failing to arrest 

 our attention. The alarm-note is a harsh "churr" several 

 times repeated. 



59. Phylloscopus trochilus (Linn.). 

 Ad. <$ . Sipopo, Nov. 5, 1902. 



Ad. ? . Moka, Dec. 14, 1902. 



60. Alethe castanea (Cass.). 



Alethe castanea Shelley, 13. Afr. i. no. 1153 (189(5) ; Bocage, 

 Jorn. Lisb. (2) vii. p. 34 (1903: Fernando Po); Salvad.Orn. 

 Golfo d. Guinea, iii. p. 107. 



a. Ad. <$ . Ribola, Nov. 2, 1902. 



b. Ad. ? . llibola, Nov. 2, 1902. 



c. Ad. c3 . Ribola, Nov. 2, 1902. 



d. Ad. J. Ribola, Nov. 1, 1902. Iris hazel; bill black; 

 legs and feet bluish flesh-coloured. 



e. Ad. <$ . Sipopo, Nov. 3, 1902. 

 /. Imm. <$ . Sipopo, Nov. 4, 1902. 

 y. Imm. ? . Sipopo, Nov. 4, 1902. 



Description of the young. Upper parts dull black, with pule 

 oval chestnut centres to each feather, becoming narrower on 

 the crown and nape; under parts chestnut-rufous, with 

 feathers of the fore-neck and chest fringed with black ; 

 under wing-coverts grey. 



We found this bird widely distributed everywhere in the 

 undergrowth, flying low from bush to bush, always in a 

 very laboured manner. The note is a running " churr," 

 which is weak for the size of the bird. Whenever, after rain, 

 a swarm of driver-ants covered the ground and the branches 

 of the trees, these birds mustered in dozens, stealing with 

 low flight surreptitiously up to their prey, to disappear again 

 the next minute into the thicket. 



Gl. Alethe moori. 



Alethe moori Alexander, Bull. B. O. C. xiii. p. 37 (1903) ; 



