1921 .] collected in Southern Cameroon . 101 
»this time—on the 9th of Harelip 1915, at Bitye. This bird 
lacks any trace of the diagonal bar on the scapulars. 
The most remarkable character exhibited by this Nightjar 
is the entire absence of spots on the inner web of the quills, 
which are uniformly coloured, and as Dr. Sharpe pointed 
out when the first of Mr. Bates’s specimens came under his 
notice, resembles in this respect C. concretus of Borneo. 
The wing-measurements of Mr. Bates’s three specimens 
are as follows :— 
S (Efulen), 153 mm. ; (No. 4107, Bitye), 141 mm. 
(barely) ; ? (No. 5942, Bitye), 148 mm. 
Caprimulgus binotatus is recorded only from Cameroon 
and from the Gold Coast (Dabocrom) [Hartlaub, J. f. O. 
1855, p.355]. 
Caprimulgus batesi. 
Caprimulgus batesi Sharpe, Bull. B. O. C. xix. 1906, p. 18 
—Type locality : River Ja, Cameroon. 
Caprimulgus batesi Sharpe, Ibis, 1907, p. 432 ; Bates, Ibis, 
1909, p. 25. 
We had already received four adult specimens of Bates’s 
Nightjar, collected on the River Ja in January, March, July, 
and August, at the British Museum. The present collection 
includes four adult birds collected at Bitye in February, 
July, and August. Numbers 3481 and 4936 are retained for 
the National Collection. 
Cosmetornis vexillarius. 
Semeiophorus vexillarius Gould, leones Avium, 1838, 
pi. 13 —Type locality : Sierra Leone. 
Cosmetornis vexillarius Sharpe, Ibis, 1907, p. 432 ; Bates, 
Ibis, 1909, p. 26. 
There are three specimens of the Pennant-winged Nightjar 
in the present collection (Nos. 4140, 5987, 5947), all of which 
were obtained in March 1910,1914, and 1915. No. 4140 is 
a male with the white belly barred with brown, while the 
other two are females. These are not the three birds men¬ 
tioned by Mr. Bates (/. c.) and already recorded by Sharpe 
