COLEOPTERA. 



487 



violet, is met with. In the Pyrenees many Carabi with metallic 

 reflections are found, whose beautiful colours are the delight of col- 

 lectors ; the Carabus splendens, the Carabus rutilans, &c. But the 

 most beautiful insects of this tribe come from Siberia and the north 

 of China. Let us mention, for example, the Carabus smaragdinus, of 

 a beautiful grass-green ; the Carabus I'ietinghovii, of a beautiful blue 

 black, bordered with azure, with a golden band, &c. 



Fig. 508. Calosoma sycophanta pursuing a Bombardier Beetle (Brachinus explodens} 



The Carabus Adonis (Fig. 502) is not rare in Alsace, and is 

 found on the banks of streams. 



The long flat larvae of the Carabi live in the trunks of trees, among 

 leaves, under moss, &c. They are active, and live on other insects. 

 Fig. 504 represents the larva of the Carabus auronitens. 



Another genus of the same family is Calosoma. They have 

 wings under their elytra the true Carabi have not which they use 

 in passing from one tree to another. 



In the month of June is to be found on oak trees the beautiful 

 Calosoma sycophanta (Fig. 508), the occasional occurrence of which 

 in England is unquestionable; it is, however, presumed that the 



