3*6 
TRANSFORMATIONS OF INSECTS. 
to certain species, and some of them resemble tattooings when 
they are done on hard wood, and really look like works of 
art. The large elms are destroyed by this beetle in particular, 
and a smaller one does a great amount of mischief to oaks. 
In the centre of the engraving on page 315 the long gallery 
made in the first instance by the female is seen to be surrounded 
by the radiating alleys, which have been gnawed out by the larvae. 
At the end of some of them nymphs may be observed, and in 
others larvae may be noticed. On the right; hand side there are 
two perforations from without, and a female beetle may be seen 
at the end of each making its gallery. They have already laid 
some eggs which resemble white points within little niches on 
the sides of the gallery. These little niches will be enlarged 
Tomicus typographic. Scolytus destructor. 
The beetles of these destructive species are represented in their natural size, and 
, magnified. 
in a radiating direction by the larvae, which, as they grow larger 
and larger, make wider and longer alleys. A closely allied genus 
has a species which does much mischief to fir trees, marking 
them just as if plans or maps had been cut upon them. It is 
called Tomicus typographies. 
The most numerous family of the order of the Coleoptera is 
that of the Curculionidcc , and many species are known as Weevils 
and Hog Beetles. 
The larvae of the Curculionidoz are almost always thick, massive, 
and slightly curled, like the larvae of the Scarabceidce ; they are 
colourless, white or yellow, and they have flexible skins. These 
insects live hidden up in the trunks of trees, and in twigs or in 
grains. They have no legs, or they only possess the rudiments 
of them, in the form of small tubercles, which may be distinguished 
