BEETLES. 109 



orange -coloured. It is found under the bark of dead 

 oaks, lime trees, and in rafters. The larva occurs in houses 

 among rubbish. It is rather scarce and local. 



Genus Clerus, Fabr. 

 Pronotum almost heart-shaped, strongly constricted behind, 

 and with a transverse impression before the extremity. The 

 antennie are gradually thickened towards the extremity. The 

 last three joints are as broad or broader than they are long, 

 and the last has an oval extremity. They are found on the 

 stems of trees. 



* C. fm^micarius, Linn. (Plate XL, Fig. 28). Pronotum and 

 elytra red at the shoulder angles, the latter with two white 

 bands. It is found on fences and in tree-trunks. The larva 

 preys on wood-boring beetles. 



Genus Trichodes, Fabr. 

 Body elongated. Pronotum attenuated behind, and trans- 

 versely compressed in front of the extremity, so that the 

 front margin appears to be somewhat raised. The antennae 

 have a three-jointed terminal club, the last joint being very 

 large and obliquely truncated. The tarsi are four -jointed. 

 The males usually have rather stout hind femora. They live 

 in flowers, where they lie in wait for other insects. The larvffi, 

 which are red, live in the nests of bees. 



* T. ainarius, Linn. (Plate XL, Fig. 29). This species is 

 dark blue, with thick pubescence. The elytra are red, with 

 two broad bands, and the tip blue-black. It is found in the 

 nests of honey bees and mason bees. It has been met with in 

 Britain, but has been probably introduced. 



* T. alvearius, Fabr. (Plate XL, Fig. 30), is very similar to the 

 last species, but is not so hairy, and the end of the cl}tra is 



