334 ZOOLOGY. 



74. I. (Rhinopomastes) aterrimus (Steph.). 



Prormrops aterrimus, Steph. Shaw's Gen. Zool., Aves, j^iv. 257. 

 P. pusillus, Swains. B. \\rest Afr. ii. p. 120. 



P. cyanomelas, Eiipp. Syst. Uebers. No. 104.— Ferr. et Gal. 

 No. 159. 



Iris brown, bill black, gape yellow, legs black. 



A silent bird, only seen solitary, and apparently not 

 a,ssociating in flocks like I. erythrorhynchus. It was 

 ^let with rarely in tbe Anseba valley amongst thick 

 bushes and trees. Dimensions : 



Wino- Tail Whole length Bill from nostril 



wing. lau. ^^jg^^ ^^^^ 



in. in. in. in. 



Male 4-3 5-8 10 1 



Female 3-8 5;3 875 0-85 



The latter is in duller plumage, and is perhaps im- 

 ma(ture. 



Eamily CYPSELIDJ2. 



75. Cypselus sequatorialis, Miill. 



Miiller, Naum. 1851, iv. p. 27. — Id. Desc. de nouv. Ois. d'Afr. 



tab. vii.— Sclater, P. Z. S. 1865, p. 598. 

 0. Buppelli, Heugl. Syst. Uebers. No. 106 (without descr.) ; Orn. 



N. 0. Afr. p. 141, No. 102. 

 0. mdba, Lefebvre, p. 77.— Heugl. Orn. N. 0. Afr. p. 140. 



This bird was not rare around Senaf^ in February and 

 March, and I am inclined to believe, from having seen 

 the birds late in the evening and early in the morning 

 flying round the cliffs of the trachyte hills (known in 

 the army as Senaf^ rocks) west of the camp, that they 

 roosted there. In May they had disappeared ; at least 

 I could see none. Their flight is very similar to that of 

 C melha, and I think equally swift. I only shot two 

 specimens. The measurements of one of these, a female, 



