20 BEETLES. 



front tibiai and one on the middle pair. The first two joints of 

 the antennae are flattened. 



* C. fossor, Linn. (Plate III., Fig. 7). Antennoe and legs 

 red. Pronotum almost quadrangular. It frequents garden 

 refuse, and is also found under stones in damp, sandy places. 



Genus Bkaciiinus, Weber. 

 Body elongated, oval, with a long red pronotum. The 

 species of this genus live gregariously under stones, and if 

 disturbed eject a fluid from the abdomen which volatilizes, on 

 contact with the air, with a slight report. 



* B. crepitans, Linn., the Bombardier Beetle (Plate III., Fig. 

 8). The third and fourth joints of the antennae are black, and 

 the elytra blue-black and finely punctate-striate. It is common 

 on the south coast of England, especially on the chalk, and 

 also near the mouth of the Thames. 



* B. cxplodenSy Duft. This has also the third and fourth 

 joints of the antennjE black, but is smaller and more finely 

 punctured. It is found in similar localities to the last species. 



Genus Lebia, Latr. 



Elongated oval beetles with a heart-shaped thorax. They 

 are small and generally brightly coloured, and are to be sought 

 for under stones, on bushes, and in cracks in the ground. 



The four following species are all found in Britain : 



* L. chlorocephala, Hoff. (Plate III., Fig 9). Wing-cases 

 with the interspaces between the striie distinctly punctured. 

 It is not uncommon in this country, and may be sought for 

 under stones. 



* L. cyanocephala, Linn. This is distinguished by the black 

 tips of the femora. The habits of this species are similar to 

 those of the last. It is very local. 



