140 BEETLES. 



E. faber, Linn. (Plate XV., Fig. 2). This beetle is pitchy- 

 black, and has the first joint of the antennae much thickened. 

 The pronotum is finely notched in the male, and finely 

 dentated in the female. The larva lives in the dead wood 

 •of old pines, willows, and poplars. 



Genus Ppjonus, Geoff. 



Pronotum with three large teeth on each side. Antennae 

 serrated in the males. Wing-cases broad and flattened. The 

 only British species is : 



* P. coriarius, Linn. (Plate XY., Pig. 3). This is pitchy- 

 black, with the sternum thickly coated with grey pubescence. 

 The wing-cases are coarsely punctured. It is found on beech 

 ^nd oak trees, and the larva lives in the decayed wood. 



Genus Cerambyx, Linn. 



Head bowed. Pronotum with a distinct tooth on the sides, 

 Toughly granulated transversely. Antennae longer than the 

 body in the males, and as long as the body in the females. 

 They are found on oak-trees. 



C. heroSy Fabr. (ccrdo, Linn.) (Plate XV., Fig. 4). Shining 

 black, with the tips of the antennae and the under surface 

 covered with fine, grey pubescence. The larva lives in 

 healthy oak-trees, and excavates large passages. The beetle 

 feeds at night on the sap. It is found in various parts 

 of the Continent. 



C. cerdo, Scop, (scopolii, Fuessl), (Plate XV., Fig. 5). This 



species is shining black, with the elytra not narrowed towards 



the end. It is found in beech and oak in various parts of 



the Continent. 



Genus Purpuricenus, Serv. 



Antennae sparsely hairy, setiform in the males, with twelve 



joints, and longer than the body. Those of the female are 



