3i6 



TJ^A.VSFO/^Jf AT/OATS OF IXSECTS. 



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 



Tomkui typographns. Scolytus dcs/n/ctor. 



The beetles of these destructive species are represented in their natural size, and 



maenified. 



in a radiating direction by the larvae, which, as tliey 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 typograpJms. 



The most numerous family of the order of the Colcoptcra is 

 that of the CurculionidiZ, and many species are known as Weevils 

 and Hog Beetles. 



The larv^ae of the CiirculiouidcB are almost always thick, massive, 

 and slightly curled, like the larvse of the ScarahcEidcs ; 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 



