111 
ENTOMOLOGICAL INTELLIGENCE, NOTICES OF 
NEW BOOKS, &c. 
(No. XIX.) 
Monocraruia Generis Ruapurpim, Linneei. Dissertatio Entomologica, Auct. G. Th. 
Scuneiwer. Vratislav, 1843, 4to, 99 pages, 7 plates, coloured and plain. 
Tuts is one of the most elaborate monographs which has hitherto 
been published upon a single genus of small extent, containing only 
seven species; the author having given in great detail the biblio- 
graphical history and minute external anatomy and natural history 
of the species in all their stages, as well as very long descriptions 
of each of the species. In the first of these particulars he has 
carefully noticed all the works which have appeared upon this genus 
up to the present time. In the second respect, he has made great 
use of the arrangement and modification of the veins of the wings, 
and has elucidated several questions not previously determined with 
precision—such as the existence of the six or seven eyelets on each 
side of the head of the larve ; the five-jointed tarsi of the imago ; 
the curious mode in which the head of the pupa is detached from 
the skin of the larva. He has, however, omitted to trace the 
precise structure of the divisions of the lower lip of the imago ; 
neither in his magnified figures of the maxille are the parts of 
which they are composed attempted to be traced. The pecu- 
liarity in the metamorphoses of these insects which I pointed out 
in my Mod. Class. of Ins. (vol. ii. p. 58), that the hind feet 
of the pupa, during its inactive state, are partially covered by the 
wings, is not represented amongst the figures which he gives of the 
pupa, in all of which (although represented in the quiescent state) 
all the legs are figured as free. The appendages at the extremity 
of the body of the male, hitherto undescribed, have not been repre. 
sented in the necessary detail. The predaceous habits of the genus 
have long been known ; the following is Schneider’s account of the 
mode of attack :—‘‘ Rhaphidia quum vivum insectum prope se con- 
spicit, prothorace sursum flexo, capite deflexo; statim mandibulis 
impetum facit. Quum insectum se movet subito Rhaphidia regre- 
ditur ; msecto autem debili vel jam mortuo rapide mandibulas 
corpori immittit idque perforat aride partium mollium humorem 
sugens,” p. 42. Of the habits of the larve he states, ‘‘ Larvee in 
fissuris corticis arborum szepius etiam sub cortice vetusta atque inter 
