437 
Birds of Southern Cameroon. 
without any change of position, when it flew away. It 
might then easily alight elsewhere on any chance platform 
of two or three dead twigs sufficient to support the egg, and 
by a few minutes’ work make as good a nest as the one 
had left. 
CoLUMBA UNICINCTA. [Afep.] 
Sharpe, Ibis, 1904, p. 94 ; 1907, p. 419. 
No. 3309. <$ (testes large). Assobam, Bumba R., Dec, 
1908. Iris and skin around eye red ; feet pale bluish-grey; 
bill pale leaden-blue. Shot on a high limb of a tree over 
my camp. There were two sitting side by side, almost 
touching one another, and a sound was heard to come from 
one of them resembling the distant booming” of the 
Prairie-cock. This sound has often been heard in the forest 
when the bird could not be found, being effectually hidden 
in the top branches of the trees. These large Pigeons are 
difficult to kill, and many a shot has been wasted on them. 
Turtur semitorquatus. [Zum.] 
Bates, Ibis, 1909, p. 9. 
Streptopelia semitorquata Sharpe, Ibis, 1904, p. 596; 1907, 
p. 419. 
Two specimens examined had the rectriees twelve in 
number and the wings diastataxic. 
Two more nests, each with two eggs and a third with two 
nestlings, have been found—the single egg mentioned in my 
previous paper Ibis/ l . c.) must have been an exceptional 
case. The eggs vary from 29 to 32 mm. in length and from 
23 to 24*5 mm. in width. 
Turturcena iriditorques. 
Sharpe, Ibis, 1904, p. 94. 
No. 4334. S ad. Nos. 3792, 4292, 4328. ? ad. Bitye, 
R. Ja. 
The females differ in plumage considerably from the 
male, in the manner indicated in Reichenow’s descriptions. 
My male specimen has one marked peculiarity, in that it 
has the two central rectriees broadly tipped with yellowish- 
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