44 COLIUSPASSER CONCOLOR 
Coliuspasser concolor. 
Vidua concolor, Cass. Proc. Philad. Acad. 1848, p. 66; id. Journ. Philad. 
Acad. 1849, p. 241, pl. 30, fig. 1. 
Coliuspasser concolor, Reichen. Vog. Afr. iii. p. 184 (1904). 
Similar to C. ardens and differing only in the full plumaged males being 
entirely black. Total length 10-2 inches, culmen 0:55, wing 2:8, tail 7-2, 
tarsus 0°85. ¢, Uganda (Jackson). 
Cassin’s Black Whydah ranges from Senegambia into 
Angola and Central Africa. 
Hartlaub in 1861 mentions a specimen from the Gambia 
in Verreaux’s collection, which is the most northern range 
known to me for this species. The type was discovered by 
Afzelius at Sierra Leone, and in Liberia, along the Sulymah 
River, Demery collected ten specimens. I find no mention 
of the species from our British possessions of the Gold Coast 
and Nigeria; but four specimens have been recorded from 
Togoland and one from Camaroons. 
In Central Equatorial Africa the species has been pro- 
cured by Emin at Meswa; by Dr. Ansorge at Masindi 
in Unyoro, and by Mr. Jackson in Uganda, on the second 
and fourth days’ march after leaving Kampala for Mount 
Ruwenzori. One of these latter specimens shows a few red 
feathers on the throat and may be a hybrid between this 
species and C. ardens, and resembles a specimen obtained by 
Dr. Fiilleborn at Tandalla. 
On the Congo River, Bohndorff procured the species at 
Manyanga, and in Angola specimens have been collected by 
Furtado d’Antas and by Major von Mechow, but it is apparently 
replaced by, or meets with, C. ardens in the southern portion 
