COLEOPTERA. 



441 



tree, in the months of June and July. The larvae live in the interior 

 of old beams of wood, respecting their surfaces. In a garden, at a 

 few leagues from Paris, a little wooden bridge had been built. It 

 seemed on the outside to be in a perfect state of preservation. 



Fig. 426. — Goliathus Derbyana. 



Fig. 427.— Goliathus Polyphemus 



Nothing on the exterior would have led one to think it was possible 

 for the oak timbers which composed it to break down. A good many 

 of them, however, broke suddenly. It was then seen that the wood 

 had been scooped out right up to the surface, which was nothing 

 better than a thin sheet, of an imperceptible thinness. All the 

 interior was full of Trichii, in the states of larva, pupa, and perfect 

 insect. 



The Trichius fasciatus, sometimes called the Bee Beetle, is very 



