6 Ins, 
INSECTA. 
defined ; but, as each of these so-called types includes many insects, 
Crustacea, &c., of very different groups, the classificatory value of tlie 
observations appears to bo nil. The most important observation, how- 
ever, is that the commisural fibres are never detached from the connective 
except occasionally in appearance. 
McLachlan, R. Eucalyptus Galls. Ent. M. M. xvii. pp. 145-147, wood- 
cuts. 
These contained remains of Dipterous and Lepidopterous larvse, and 
Hymenopterous parasites. 
Mj^gnin, P. Les Parasites et les maladies parasitaires chez I’homme, les 
aniraaux domestiques et les animaux sauvages, avec lesquels ils peu- 
vent dtre en contact. Insectes, Arachnides, Crustaces. Avec 63 
figures dans le texte, et un Atlas de 26 planches dessin^es par Fauteur. 
Paris : 1880, 8vo, pp. 478, pis. xxvi. 
A useful treatise, divided into six chapters, dealing with Diptera, 
Hemiptera, Aphaniptera and Goleoptera, Eplzoa, Acari, and Crustacea. 
Meinert, F. Sur la conformation de la tete et sur I’interpretation des 
organes chez les Insectes, ainsi que sur la syst(^matique de cet Ordre. 
Ent. Tidskr. i. pp. 147-150. 
The author briefly describes] the structure of the head and mouth- 
organs in Insects, and proposes to divide the class into two main sections, 
as follows: — 
I. Insects with fixed and jointed mouth-organs : Coleoptera, Synis- 
tata, Ilymenopteray Lepidoptera, Mallophaga, Chilognatha, 
Ulonata, and Chilopoda. 
II. Insects with protractile mouth-organs, which are scarcely jointed; 
Diptera, Siphonoptera, Siphonculce, and Hemiptera. 
. Om Ordenen Diploglossata. Vid. Medd. 1879-80, pp. 343-346. 
Hemimerus is intermediate between the Orthoptera and Thysanura, and 
the writer is inclined to refer it to the latter group, rather than to place 
it in an Order by itself. 
MOller, H. Alpenblumen, ihre Befruchtung durch Insecten, und ihre 
Anpassung an dieselben. Leipzig : 1881 (Nov., 1880), 8vo, pp. iv.- 
611, woodcuts. 
[Not seen by the Recorder.] 
Nickerl, 0. Bericht fiber die im Jahre 1879 der Landwirthschaft 
Bohmens schadlichen Insekten. Erstattet zu einen hohen Landes- 
culturrath ffir das Konigreich Bohmen. Prag; 1880, 8vo, pp. 23. 
Contains notices of the appearance of 30 insects of various Orders. 
Notthaft, J. liber die Gesichtswahrnehmungen Vermittels des Facet- 
tenauges. Abh. Senck. Ges. xii. pp. 35-124, pis. i.-iii. 
An elaborate paper, written chiefly from optical and mathematical 
standpoints, discussing the vision of insects of various Orders, and com- 
paring it with that of the higher animals. 
