FURTHER NOTES 
ON 
BIRDS FROM THE RIVER GABOON IN WEST AFRICA 
BY 
H. E. STRICKLAND. 
Soon after my former notice of some birds from the River Gaboon, 
at p. 131 supra, was printed, I received the “Revue et Magazin 
de Zoologie” for June and July, 1851, which contains the com- 
mencement of a paper by MM. J. and E. Verreaux, relating to 
the same collection of birds. Having fortunately adopted M. Ver- 
reaux’s MS. names in my former paper, this double publication of 
the same species will produce little or no confusion of synonymy. 
I have, however, thought it desirable to publish, without loss of time, 
any annotations which may occur to me in collating these two in- 
dependent and nearly simultaneous notices of the same objects. 
* Reyue et Magazin de Zoologie,” 1851, p. 257.—M. Verreaux 
announces, as a recent discovery of the Prince of Canino, that two 
species of Zuracus have been hitherto confounded under the Lin- 
nan specific name of persa—the one with a green crest mar- 
gined with red, and the other with the crest wholly green; and 
that the former is the true Cuculus persa of Linneus. The fact 
is, however, that not two but three species have been thus con- 
founded; and the rectification of this error is not so new as M. 
Verreaux supposes, for it is just ten years since I pointed out, in 
the Annals of Natural History, vol. vii. p. 33, that the species 
with a red-margined crest is the true 7. persa, and that the green- 
crested one will stand as 7. buffoni, Vieill. (1819), while to the 
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