BEETLES. 17 



are almost smooth. This handsome species is common in many 

 places on the Continent, notably in France, Western Germany,, 

 and Switzerland, but when found in Britain has probably been 

 introduced. 



C. auronitens, Fabr. (Plate IL, Fig. 3). The grooves between 

 the black longitudinal ridges of this species are finely corru- 

 gated, and the first joint of the antennae is red. The thorax 

 generally has a golden lustre. It is not found with us, but is- 

 common in hilly districts in many parts of the Continent, w^here 

 it may frequently be taken in rotten stems of dead trees. 



* C, nitens, Linn. (Plate IL, Fig. 4). This pretty species 

 is the smallest of the Carahidce found with us. It is of a 

 brilliant green, with the edges shining coppery-red, and three 

 black longitudinal ridges on each of the elytra. It is not 

 very common, but may be found on moors and mosses. 



* C. violaceus, Linn. (Plate IL, Fig. 5). The wing-cases of 

 this beetle are dull blue-black, edged with bright blue or violet. 

 It is common under moss or stones in woods. 



* C. glabratus, Payk. (Plate IL, Fig. 6). The wing-cases- 

 are strongly convex, with dull bluish borders. It is found 

 in fields near woods. 



* G. arvensis, Fabr. (Plate IL, Fig. 7). Wing-cases coppery- 

 red, greenish, violet, or almost black, with raised granules. It 

 frequents woods and sandy fields. 



* C. nemoralis, Mlill. (Plate IL, Fig. 8). Pronotum purplish, 

 elytra coppery, with three rows of metallic punctures. It is 

 common everywhere, near woods, under moss and stones, &c. 

 This species, monilis, and violaceus are about the commonest 

 species of the genus found in Britain, and may often be found 

 dead on the roads, a little out of London, having been trodden 

 upon during their nocturnal rambles. 



