LANIARIUS POENSIS 335 
sneaking away through the undergrowth without being seen, 
and it was some time before we discovered the author of these 
strange noises.” 
Grauer collected this species in the same neighbourhood 
as well as in the forest of Rugege east of Lake Kivu. 
As an undoubted example of the larger L. lewcorhynchus 
was also obtained by the Ruwenzori Expedition in the Semliki 
Valley, it seems best at present to leave the two forms as 
separate species, though the differences between them seem 
to be hardly more than subspecific. 
Laniarius poensis. 
Dryoscopus poensis, Alexander, Bull. B.O.C. xiii. p. 37 (1902) 
Fernando Po. 
Laniarius poensis, Reichen. Vog. Afr. ii, p. 725 (1903) ; Alexander, Ibis, 
1903, p. 360. 
Adult male. Entire plumage glossy jet-black, with a slight steely- 
blue gloss less marked on the thighs and abdomen. Iris bluish black; 
bill and feet black. Total length 7:25 inches, culmen 0°75, wing 3:2, 
tail 2°65, tarsus 1:15. St. Isabel, Fernando Po, type ¢g, 25. 11. 02 
(Alexander). 
Female. Is slightly smaller and less glossy ; wing 3:0, tail 2:5 (Alexander). 
The Fernando Po Boubou is confined to that island. 
It was discovered by Captain Boyd Alexander during his 
visit there in 1902. It is most closely allied to LZ. holomelas, 
from which it would be quite difficult to distinguish it. It is 
perhaps a little more glossy and black and in this respect 
resembles L. lewcorhynchus, but it is much smaller than the 
last named. 
Alexander writes: “‘ We found this Shrike locally distri- 
buted in the vicinity of the Peak, from a height of 4,000 feet 
upwards. My collector also obtained it at Moka. It is a 
shy bird, resorting to the tops of the tall mountain trees and 
to the thickest brushwood, when it is more often heard than 
