Forest Insects. 483 
the former, with equal skill and assiduity, has illustrated the Ick- 
neumones adsciti. 
Forslinseckten, &c. Forest Insects. The Natural History of Insects 
which prove injurious to Woods. By Professor E. A. ROSSM^ES- 
SLER. 1 Vol. 8vo. (100 pages) with a lithographic plate. Leip- 
sig, 1834. 
This compendious work is one of the few which treats the sub- 
ject to which it is devoted in a systematic manner. It consists of 
25 paragraphs, containing observations on the generalities, the clas- 
sification, the retreats, the nourishment, and the mode of distinguish- 
ing insects injurious to trees ; likewise descriptions of the species 
in their different states, and a detailed account of the injuries they 
occasion. The author confines his remarks to the species which at- 
tack forest trees, in strict consistence with the title of his work, al- 
though it would have added both to the interest and importance of 
his labours, had he extended them to the fruit department. He ar- 
ranges his insect species (only twenty in number) in reference to 
the trees which they attack : as follows. 
A. CONIFERS. 
I. Pinus abies. 
a. The young plants : Curculio abietis. 
b. The old trees : Bostrichus typographies ; Hylesinus piniper- 
da ; Bostrichus chalcographus ; Rhagium inquisitor (less hurtful 
than the others) ; Sirex gigas. 
II. Pinus silveslris. L. 
a. The young plants : Tortrix turiona ; Tortrix Buoliana ; Cur- 
culio abietis. 
b. The old trees. Bombyx pini ; Bombyx monacha ; Geometra 
piniaria ; Noctua piniperda ; Tenthredo pini ; Bostrichus pinastri. 
III. Pinus picea. L. Bostrichus abietiperda. 
IV. Pinus larix. L. Bostrichus laricis. 
B. LEAFY TREES. 
Melolontha vulgaris and solstitialis ; Bombyx processionea ; Bom- 
bvx salicis. 
