teres," describes nine species, and observes, 

 that they are limited, in their geographical 

 distribution, to Europe, Asiatic Russia, and 

 North America ; that although they are, strictly 

 speaking, Carabici, yet they have so much the 

 habit of the Heteromerae, that Linne placed 

 them in his genus Tenebrio. 



They are of a blackish colour, glossed w^ith 

 a handsome metallic tint, chiefly of a purplish 

 cast. They inhabit beneath stones, and under 

 prostrate logs. 



The vsrord Cychrus, is derived from kv^^cs, the 

 Greek name for a bird. 



CYCHRUS VIDUUS. 



SPECIFIC CHARACTER. 



Black; elytra cupreous-violaceous, polished, 

 humeral edge, and lateral margins of the thorax 

 reflected, the latter contracted behind. 



PLATE 45. 



