368 Mr. Boyd Alexander on the 



the whitish flesh-colour of the legs and feet, the tawny buff 

 spots at the end of the wing-coverts ; the chin and throat, 

 which are white, with narrow crescentic slaty-grey edges 

 to the feathers ; fore-neck pale orange, with narrow fringes 

 of slaty grey to some of the feathers. 



This species is locally distributed and frequents the marshy 

 forest-ground at the foot of the hill-ranges. It is a tame 

 and confiding bird and in habits recalls our Robin. Native 

 name " Di weba." It keeps much to the undergrowth, 

 where it flits with a low flight from one bush to another. 



47. Hylia prasina (Cass.). 



Hylia prasina Shelley, B. Afr. i. no. 924 (1896). 



Hylia poensis Alexander, Bull. B. 0. C. xiii. p. 36 (1903); 

 Bocage, Jorn. Lisb. (2) vii. p. 40 (1903 : Fernando Po) ; 

 Salvad. Orn. Golfo d. Guinea, iii. p. 110. 



I find, on further examination of a larger series, now at 

 my disposal, that the Fernando Po Hylia is not separable 

 from H. prasina, the characters assigned to the former not 

 remaining constant. 



Ad. $. Ribola, Oct. 30,1902. Iris hazel; bill black ; 

 legs and feet greenish olive. 



In the immature bird the bill, legs, and feet are yellow. 

 The female is larger than the male. 



This species is widely distributed in the woods at the foot 

 of the hill -ranges. The breeding -season commences in 

 November. A good series was obtained. 



Poliolais, gen. nov. 

 This new genus is next to Camaroptera, but the distinctive 

 characters are the white outer tail-feathers and the uniform 

 rufous brown crown. 



48. Poliolais helenor^e. 



Poliolais helenora? Alexander, Bull. B. O. C. xiii. p, 36 

 (1903); Bocage, Jorn. Lisb. (2) vii. p. 40 (1903) ; Salvad. 

 Orn. Golfo d. Guinea, iii. p. 109. 



Adult. Forehead, crown, and back of neck rufous brown, 

 fading into pale chestnut on the sides of the forehead and 

 head; remainder of upper parts dusky olive-brown, paler on 



