( 15 ) 



The pagination is estimated, parts as issued uot beiug available to me. 



This would give as date of publication of Lathumus of the Traitc (/'0/n. 

 July 10, 1830. 



From the same source I obtained information regarding the Centiirie de ZooL, 

 thus : 



l"" livr. No plates. In 8" de 2 sheets ; in 4" de 4 sheets. March 20, 1830. 



2- „ 5 „ „ 2 „ Oct. 2, 1,S30. 



3" „ 5 „ » 1 slitet Jan. 29, lfS31. 



4" and 5" livr. — — — 



(5% 7", and SMivr. l.j [dates. Un seul cahier de 3 sheets. July 0, 1831. 



9" to 12" livr. — — — 



13'^^ to 16" ,, 20 plates. Uu seul cahier de 3| sheets. May 19, 1832. 



" Le cahier annouce aujonrd'hui est le dernier " is added to this notice. 



From this it is conclusive that Lathamus of the Cent. Zool. could not have 

 have appeared until after the Traite usage. 



A complication at first sight appears by the notices of the Cent. Zool. given iu 

 Ferussac's Bull, des Sci. Sat. In vol. xix. j). 321, No. 180, November— December 

 1829, a notice is given of its appearance, and twelve plates are indicated as forming 

 livr. 1 and 2. In vol. xxiii, p. 201, No. h")3, November 1830, another notice 

 is given of livr. 1—5, and here the contents of livr. 3 — 5 are given as 5 pis. 

 each, and P. {Lathamus) aurifrons is mentioned as part of livr. 3. In vol. xxiv. 

 p. 3.j1, No. 222, March 1831, livr. 6—12 are noticed. 



That all these notices are preliminary is proved by the receipt of the parts as 

 given by the Bibliotheque Frani,'aise. The first appeared without plates, and the 

 second with five only instead of the twelve noted above in the first notice. The 

 second instance appears similarly as preliminary note with regard to livr. 3 — ^5, 

 as there P. {Lathamus) aurifrons is given as part of livr. 3, which contained five 

 l)lates only, and this, with the twelve noted, only makes seventeen, whereas 

 P. (L.) auri/rons is plate 1 8. 



Examination of the dated articles in the Cent. Zool. shows that the majority 

 of the first twelve bear dates October — November 1829, pointing out that the 

 first notice was written probably from MS. The text to plate 74 is dated March 



1831, whilst the Postscriptum at the end of tlie work is dated February 1831. 

 Consequently no reliance can be placed upon these dates or the notices iu the 

 Bulletin, and the only trustworthy dates are those given in the Bibliotheque 

 Fran(;aise. 



As Lesson was one of the reviewers attached to the Bulletin, it is easy to see 

 how such preliminary notices could be written. 



The name selected by Oberholscr, namely Eapkema Wagler, ajipeared in the 

 Abhandl. Ah W'issensch. Miinchen, i. p. 492, and the date accepted by Oberholser, 



1832, may be admitted. This paper has sometimes been quoted as 1829-30, 

 but a footnote on p. 502 quotes the Bullet. Unic. 1831, p. 241. This appeared 

 in June 1831, so that at the earliest it was later than that date. 



Oberholser, when admitting Ldthumus of the Cent. Zool., wrote that its 

 connection with the species there figured " makes it a synonym of Bolborhijncha.i." 

 Of course this was purely an error, as that name was not introduced until almost 

 thirty years after the issue of the Cent. Zool. 



