274 Mr. W. P. Lowe on the [Ibis, 



Centropus senegalensis senegalensis. ISenegal Coucal. 

 One of the coiumonest birds, occurring everywhere. 



Ceuthmochares aereus flavirostris. Yellow-billed Coucal. 

 A I'airly coniinon bird. 



Tachornis parvus brachypterus. Short-winged Palm-Swift. 

 One of the most common birds. 



Scotornis climacurus. Long-tailed Nightjar. 



This is quite a common bird. On 16 March I found n 

 bird sitting on some reddish-coloured ground amongst the 

 cassava. I went close u[) to it and it refused to move until 

 I practically touched it with my hand, when it flew away 

 a short distance, leavino- two eoos which were brought home. 

 Their colour matched the ground wonderfully well. 



Lophoceros semifasciatus. Half-barred Hornbill. 

 Tolerably common. 



Bycanistes fistxilator. Piping Hornbill. 

 Moderately conunon and noticed feeding on berries. 



*Bucorvus sp. ? Ground-Hornbill. 



A pair of Ground-Hornbills inhabifed the island. Unfor- 

 tunately, I was not able to obtain a specimen, though I 

 and others saw them many times. In size they resemble 

 B. alnjss'inifus, but differ from that bird in being entirely 

 black throughout, including the head and neck. They are 

 known to the natives as "Woodcock," and are said to occur 

 on the mainland, but I failed to find any. The beat of the 

 wing is audible at a considerable distance. 



[It seems very probable that the Clround-Hornbill seen by 

 Mr. Lowe on Tasso Island will prove to be an entirely new, 

 undescribed species. A race (if recognised as such) of 

 B. ahyssinims is certainly known to inhabit parts of West 

 Africa, and is recorded by Reichenow from Portuguese 

 Guinea. This form was named by Schlegel "■ Buceros 

 caruncidatns, var. guineensis," on account of its supposed 

 smaller size etc., but Reichenow (' YOgel Afrikas,' ii. p. 234) 



