( 432 ) 



XXIV. Further notes on the " Jurinean " Genera of Hymeno- 

 ptera, correcting errors and omissions in a paper 

 on that subject published in Trans. Ent. Soc. 

 Lond. 1914, pp. 339-436. By the Rev. F. D. 

 Morice, M.A., and Jno. Hartley Durrant. 



[Read November 1st, 1916.] 

 The Chronology of Panzer's Faunae Insectorum Germaniae. 



On page 2 of Saunders's valuable Index to Panzer's 

 Fauna Ins. Germ, he tabulates the " Dates of Publication 

 as given on the Index of each Jahrgang." From this it 

 might perhaps be supposed — and we at first supposed 

 ourselves — that the actual date on which any particular 

 Figure in Panzer's work first appeared would be that 

 printed on the Index of the " Jahrgang " in which it 

 was included. But this is not so. The year mentioned 

 on the Title-page of each Index is that in which the Index 

 itself was published, and this was not issued until the 

 close of each completed " Jahrgang " (i. e. annual series 

 of 12 " Heften ") ; whereas the " Heften," and the Plates 

 contained in them, were issued at intervals in the course 

 of the Jahrgang. For instance, the date given on the 

 Index of Jahrgang 8 (= Heften 85-96) is " 1805." But 

 we know that even the last of these Heften (viz. 96) had 

 already appeared by " October 1st, 1804," because on 

 that day Panzer published a Notice of his forthcoming 

 work, the " Kritische Revision," and stated in it that 

 " 8 complete Jahrgangen of the Fauna containing Heften 

 1 to 96 " had then been issued. Accordingly the true 

 " date " of any Heft in the Jahrgang dated 1805 cannot 

 be later than September 1804, and the earlier Heften in 

 it {e.g. Heft 85) may have appeared earlier yet, in 1803, 

 or even 1802 ! — in fact, at any date not prior to that given 

 on the Index of the previous Jahrgang, viz. September 3rd, 

 1801. It seems probable that the successive Heften of 

 each Jahrgang were at first issued regularly, month by 

 month, but that subsequently, from one cause or another, 

 interruptions occurred to delay the issue of particular 



TRANS. ENT. SOC. LOND. 1916. — PARTS III, IV. (APRIL '17) 



