COLEOPTERA. 485 
larva of the Calosoma often chooses a home in thé nest of the 
Procession-moth caterpillar (Bombyx processionea), on oak trees, 
and it very soon rids the tree which is infested by them. 
The Calosoma auropunctatus is peculiar to the south of France. 
Its larva (Fig. 507) devours snails, and establishes itself in their 
shells. These larvee have been known to fill themselves so full 
of food as to become double their natural size; in which state 
they are sometimes devoured by those of their own species. 
A smaller kind, the Calosoma inquisitator, is very frequently to 
be met with in woods. Fig. 508 presents this insect pursuing a 
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Fig. 508.—Calosoma inquisitator pursuing a Bombardier Beetle (Brachinus explodens). 
Bombardier (Brachinus explodens), which squirts out a vapour of 
pungent odour. 
In the countries of the south-east of Europe and in Asia 
Minor, one finds enormous Caraéici, the Procrustes and the Pro- 
cert, which attain nearly two inches in length, and whose in- 
teguments resemble very rough shagreen. One species alone is 
met with in France, the Procrustes coriaceus (Fig. 509). In 
Austria is found the Procerus gigas (Fig. 510). 
The genus Omophron (Fig. 511) contains small, almost globular 
Carabici, of a pale yellow, with green lines, and which live in the 
sand bordering rivers. The Nebrias in general prefer moun- 

