324 Count T. Salvador! — Bonaparte's ' Iconografia' ^c. 



It is generally stated that it was published in 1839'^; 

 but this date is certainly "wrong. Bonaparte's " Introdu- 

 zione "" bears no date of any sort^ but from internal evidence^, 

 as Prof. Newton has rightly noted (YarrelFs Brit. B. i. p. 613, 

 note), it is quite certain that it was not published before 

 1840, as in it mention is made of some generic and specific 

 names, published for the first time by Keyserling and Blasius 

 in the ' Wirbelthiere Europa's 'fj a work published in 1840, 

 not before tlie month of May, as the Prospectus I have to 

 that work bears the date May 1840. From this it is quite 

 evident that Bonaparte's " Introduzione " must have been 

 published some time after that date, and I feel pretty sure 

 that it did not appear till 1841. In fact, in the last para- 

 grapli of the "Introduzione" all the birds figured in the work 

 are mentioned, and as the last one described and figured, as 

 shown by the table ('' Indice distributivo del Tomo Prime''), 

 was Querquedula angust'irostris f , which was contained in 

 the 30th or last part or " fascicolo/ published, according 

 to the author's statement {' Specchio genei'ale dell' Opera'), 

 in 1841, it follows that the " Introduzione " must have been 

 published after the completion of the 30th or last part or 

 *' fascicolo " of the work, and it is very natural that it should 

 have been so. 



But, then, how is it that in Gray's 2nd edition of the ' List 

 of Genera of Birds,' jsublished in 1841, the genus Chettusia, 

 Bp., is already mentioned ? There is not much difficulty, I 

 think, in explaining this. Gray's ' List,' which, as I hear from 



used by Bouaparte as the Italian name of Vanelhis gregariiis, wlien lie 

 published the description and plate of this bird, in "fascicolo" xxiii., in 

 1838. 



* 'List of Brit. Birds, B. 0. U.,' p. 73; ' Check-List of N. Am. B.' 

 p. 238, &c. 



t Bonaparte, besides mentioning the genus Simorhynchus, K. et Bias., 

 and Liirus leucocepJialus, Boiss., as a synonym of L. lanibruschinii (the 

 first established, and the second identified in Kej'serling and Blasius's 

 work), alludes to Durazzo's ' LTccelli Liguri,' which was published in 

 1840. 



X The figure of the head of Callichen nijinus is only additional to the 

 plate. 



