498 
APPENDIX. 
rump feathers being dense, long, and downy as in the true 
Pycnonoti. 
From Mr. Fraser’s collection. 
Family. Fissirostees. 
Genus. Hirundo. 
Hirundo Nigrita^. (Thomson.) 
Hir. subcEerulea-nigra plerumque j mento subtus albido; cauda 
pennarum interiore marginibus albis, extremis nigris. Eostro 
pedibusque nigris. 
Long. tot. 5^ unc.; aim, 4^. 
Habitat. River Nun, West Africa; met with as high up as 
Aboh. 
General plumage bluish black, with a white patch under the 
chin ; the inner side of the five outer tail feathers, white in the 
upper three fourths, black in the remainder. The tail forms a 
segment of a circle, the two outer tail feathers being the longest. 
Presented to the British Museum by Dr. Thomson. 
Cypselus parvus, (Strickland, in Proc. Zool. Soc. Loud.) 
Plumage uniform mouse colour, chin whitish. It is probably 
the smallest species of its genus, the total length being only 6 
inches; wing, 4f inches ; medial rectrices, If inch; external, 
inches. 
Habitat. Accra. 
From Mr. Fraser’s collection. 
Platysieira castanea, (Fraser, in Proc. Zool. Soc. Lond., Oct,, 
1842.) 
Platys. vertice genisquo ciuereis; mento albo; dorso, alia, 
supern^, gula et pectore castaneis ; abdomine albo, appendicnlis 
carnosis circum oculos rubris; rostro nigro; iridibus rufescenti- 
* In speaking of this bird in Vol. I. of the narrative, as also of the 
Porphyria Alleni, in Vol, II., we have inadvertently refeived to the 
work in which they are figured, as by G. D. Mitchell; it is Gray 
and Mitchell’s Elustrated Qemra of Birds, 
