172 Capt. G. E. Shelley on Birds 



Museum by one from the Transvaal and one from Mamboio 

 (P. Z. S. 1882, p. 30G), therefore P. holomelcena should occur 

 in British East Africa; and the following key may be 

 useful : — 



«. No pure white on the plumage. 



a' . Tail square nitens. 



b^. Tail strongly forked. 



a^. General plumage black glossed with green ; 

 axillaries and under wing-coverts dusky drab, 

 a'. Gloss more golden green. Wiug3*G5to3'8in. obscura. 



h^. Gloss more bluish green. Witig 38 in chalybcea. 



c'. Gloss more olive-green. Wing 4'3 to4-7 in.. . holomelcena. 

 6*. General plumage bronze-brown; under wing- 

 coverts scarcely paler. \\'ing 4'25 in fxdiyinom. 



c^. General plumage sooty brown ; axillaries and 



uuder wing-coverts brownish white fetiti. 



b. Pure white confined to the entire axillaries and under 



wing-coverts. 

 c^ General plumage browner and less strongly glossed. 



d"^. Gloised with bronze-brown antinorii. 



c^. Glossed with green orientalis, 



d^. General plumage blacker, with a very strong gloss. 



f^. Glossed with o;reen blanfordi. 



g'^. Glossed with blue pristoptera. 



c. White confined to head, which is mostly white in 



adults alhiceps, 



67. PSALIDOPROCNE ALBICEPS Scl. 



This is the first time this species has been recorded from 

 so far south as Nyasaland. It ranges northward to Wadelai 

 on the Upper White Nile and the Ulu Mountains in 

 Ukambani. 



68. Cypselus alfredi Shelley. 



Cypselus alfredi Shelley, B. Afr. ii. p. 345 (1900). 



Nearly allied to C. isquatoiialis, but slightly larger and 

 darker. General plumage blackish brown, with a slight 

 greenish gloss, fading into white on the chin and upper 

 throat ; feathers of the back with almost obsolete pale edges ; 

 crop and under surface of body Avith indistinct narrow white 

 edges to the feathers, inclining to spots on the abdomen and 

 sides of the body ; axillaries and some of the larj^er under 

 wing-coverts with narrow white terminal edges; outer under 



