98 
Letters, Announcements, fyc. 
word " common” refers to H. rustica, and should have been 
inserted above Hirundo javanic'a, which is the heading of the 
succeeding paragraph. 
At page 409, under the head of Cyornis jerdoni, sanguineus 
is given as a synonym. This is a misprint for banyumas. 
Yours, &c., 
J. Hayes Lloyd. 
Note on the correct generic name of Podiceps minor. 
IrrMr. G. B. Gray^s 'Catalogue of British Birds 3 (1863) 
and elsewhere Sylbeocyclus is given as the first generic term 
applicable to Podiceps minor. The invention of the name is 
assigned (p. 213) to " Bonaparte, 1832/"’ hut no reference is 
added. 
Upon looking into the matter I find that this curious name* 
appears to have been first used by Bonaparte in 1834 in the 
supplementary remarks to his ' Saggio di una distribuzione 
metodica degli Animali Vertebrati/ p. 144. But the type 
given is P. carolinensis; so that Sylbeocyclus is merely a 
synonym of Podilymbus, proposed by Lesson for the same 
type in the same year. 
In Gray^s first 'List of Genera 3 (1840) P. minor is given 
as the type of Sylbeocyclus. In the second edition of the 
same work (1841) the name is correctly placed as a synonym 
of Podilymbus. In the' Catalogue of British Birds/ as above 
mentioned, and in the ' Hand-list/ the former course is again 
adopted. But in the ' Hand-list/ under Podilymbus (iii. 
p. 95), is added " Sylbeocyclus , Bp. 1856, nec 1832.” . This 
should perhaps be "Bp. 1834 nec 1838;” for in his 'Compa¬ 
rative List/ published in the latter year, Bonaparte uses Syl¬ 
beocyclus for both P. minor and P. carolinensis. But it is 
clear that he knew that this was an error; for in his ' Cata- 
logo Metodico degli Uccelli Europei/ published in 1842 (p. 83), 
Bonaparte reassigns P. minor to Podiceps, and adds " mi- 
nime Sylbeocyclus err. typ.” 
It is therefore certain that Sylbeocyclus = Podilymbus, and 
* Unde derivator P 
