Letters, Extracts, and Notes. 
561 
XXVIII.— Letters, Extracts, and Notes. 
We have received the following letters, addressed “ To the 
Editors of ‘ The Ibis 9 33 :— 
Sirs,—I will ask you to allow me to correct two errors in 
my article on the breeding-seasons of birds in Southern 
Kameroon, which I have only lately discovered. 
In the explanation of text-fig. 6, ‘ Ibis/ 1908, p. 562, 
the line stated to represent the “ Rainfall at Duala” is the 
line intended for Ebolwoa, and that stated to represent the 
“ Rainfall at Ebolwoa 33 is the one for Duala. 
In the ninth line from the bottom of the same page the 
rainfall for the year at Ebolwoa should be P8 metre instead 
of “ IT metre/’ 
Bitye, in the interior from Kribi, 
Kamerun, 
27th Jan., 1909. 
Yours &c., 
George L. Bates. 
Sirs, —In the ‘ Jubilee Supplement ’ of ‘The Ibis ’ (page 86) 
a mistake has occurred as regards the Pigeons of the 
Canaries and Madeira (line 20 from the bottom). It should 
have been stated that God man pointed out the difference 
between Columba laurivora of Gomera and C. trocaz of 
Madeira, and also described a third species from Teneriffe 
which he called C. bollii. 
I shall be obliged if you will insert this correction in the 
next part of the f Ibis/ 
Yours &c., 
F. D. Godman. 
45 Pont Street, London, 
May 24th, 1909. 
Sirs, —In the last issued part of 6 The Ibis 3 (above, p. 291) 
my friend Mr. M. J. Nicoll has proposed to call the White- 
spotted Bluethroat f< Cyanecula suecica leucocyana,’ 3 but in 
this I cannot agree with him, for the following reasons:—-I 
