516 Letters, Announcements, S^c. 



Vienna^ who called it F. xanthonyx, or the Yellow-clawed 

 Falcon," but that, as the Red-legged Hobby has also yellow 

 claws, he considers this name inappropriate. Fleischer then 

 gives a few particulars as to the distinctive characters of 

 the bird in question ; but, as he possessed no specimen, he 

 gives no formal description, and, unless one were aware that 

 it is the same species that is described by Naumanu, it would 

 be scarcely possible to identify it by the particulars given by 

 Fleischer. He adds (p. 176) that Naumann, who possessed 

 specimens, would very shortly publish full descriptions and 

 carefully executed figures of the species ; and in a foot- 

 note he states that the new edition of Naumann was then 

 (1817) in the press, and that the first volume would be 

 issued in 1818, on the Jubilee (he trusted '^der erste Baud 

 wird hoffentlich schon Jubilate 1818 die Presse verlasscn ^^) . 

 This would tend to show that the first volume of Naumann^s 

 work and the 1817-1818 volume of 'Sylvan^ were issued in 

 the same year, or else the former preceded the latter ; and it 

 is quite evident from the footnote in Naumann's ' Naturg. 

 Vog. Deutschl/ (p. 318), that when his work was issued the 

 1818 volume of ' Sylvan^ had not appeared ; for he leaves the 

 page blank, his note being as follows : — " Cenchris. Eme- 

 rillon roux. Der kleinste rothe Falke. Frisch, Vogel, t. 89. 

 = Sylvan, v. Laurop und Fischer, Jahrg. 1818, S., unter 

 dem Nahmen Falco naumanni von G. Fleischer." I further 

 observe that this same Herr Fleischer, of Leipzig, was the 

 publisher of Naumann's work ; and it may therefore be taken 

 for granted that he would have been able to fill in the page, 

 had his article in ' Sylvan ' already appeared in print : and, 

 besides, his statement that the first volume of Naumann's 

 work would appear in 1818 was most probably correct; for 

 he, as the publisher, would be the most likely person to 

 know this. 



On looking through one of the later volumes of ' Sylvan,' 

 I find it incidentally stated that in and previous to 1821, the 

 first part, containing numbers 1-7, and the second part as 

 far as the 4th number, of Naumann's work, had already been 

 issued, which shows that, although the title-page of the com- 



