308 THE ENTOMOLOGIST. 



pts. 2-4 have been issued, so that presumably pt. 1 appeared 

 between October and December 31st, 1837. I have not seen 

 Wiegmann's Archiv for 1837, and do not know if there are any 

 entomological references there. In my copy of the "Genera" 

 there is, besides the original, a second edition of the '^ystra " 

 notes, in which Burmeister refers to Spinola's monograph, and 

 / remodels his own notes and descriptions ; these (including 

 O Phenax, which is in both) extending to 4^ sides in the first 

 edition, four in the second, owing to smaller print. There is no 

 clue to the date of this, but it must be between 1840 and 1846. 



{g) The notes on^urymela (no. 17) are referred to in Amyot 

 and Serville's ' Hemipteres ' (1843). They may therefore form 

 part of the first part (1837 ?), but more probably 6th or 7th. 



(h)., Tyjjhlocyha is recorded in the ' Bericht ' for 1841; it is 

 in either the 6th or 7th part, the remainder of these parts being 

 devoted to beetles. ^ 



(i) Bythoscopus (no. 10) and Acocephalus (no. 11) are a 

 puzzle. The notes on the former are referred to in Westwood's 

 * Introduction' (1839), so that these must apparently be referred 

 to first part, but Acocephalus is referred to in Bythoscopus, and 

 vice versa, in the "Genera"; and also in "^Acocephalus, the 

 '^Jassus notes (14) (1838) are mentioned ! So that either (1) 

 Westwood was acquainted with Burmeister's MS. notes, (2) Bur- 

 meister referred to his own manuscripts, or (3) the * Bericht ' 

 had imperfect copies to record from. I think the second is very 

 likely to be the case. As I have an uncut copy, it may be 

 useful to mention that the pages measure 140 by about 230 mill., 

 the plates 164 by 243 mill. 



(8) With regard further to Guerin's ' Iconographie du Piegne 

 Animal, Insectes,' dated on the title-page 1829-38, but mention- 

 ing 1843 in the text as early as p. 352, Gu6rin himself, on p. 15 

 (where the date 1838 is to be inferred as mentioned), states that 

 many species have been published from his plates only, and that 

 he considers a figure valid publication, an expression of opinion 

 which few entomologists will share. 



With regard to these plates, 55, 58, and 59 are undated; 56 is 

 1834 ; 57, 1835 ; with regard to the text it must be after 1843. 

 Erichson, in 1848 ('Bericht' for 1846), states that it was scarcely 

 published before 1845, and was not at Berlin before 1846 ; 1844 

 or 1845 may fairly safely be taken as the date, and, as the firm 

 of Bailliere is still in existence, it may be possible to trace 

 original covers. The copy now before me contains an additional 

 title-page, not present in the other copies I have seen. On the 

 reverse side it states that the complete 'Iconographie' was pub- 

 lished in forty-five livraisons, each with ten plates. There were 

 three editions — 1. 8vo, with black figures. 2. 8vo, with coloured 

 figures. 3. 4to, with coloured figures. The text (8vo) was sold 

 separately. 



