BEETLES. 149 



J\ virescens, Fabr. (Plate XVII., Fig. 15). Upper surface 

 covered with green or greyish-blue pubescence, with three 

 paler lines on the pronotum. The larva lives in the root 

 of viper's bugloss (Echium). 



Genus ISTecydalis Linn. (Molorchus, Fabr.) 



Wing-cases scarcely longer than broad, and only slightly 

 covering the projecting wings. Femora with a club -like 

 expansion at the extremity. They are found on flowers and 

 bushes. 



M. salicis, Muls. (Plate XVII., Fig. 16). Black, with 

 golden pubescence. Antennte, legs, and elytra reddish-ochreous. 

 It is found on flowers, and the larva in willow, lime, and 

 aspen. It is an inhabitant of Central Europe. 



* N. minor, Linn. (Plate XVII., Fig. 17). Black and hairy, 

 with brown elytra, antennse, and legs. It is found on elder- 

 blossom. The larvae live under the bark of fir trees, and their 

 old burrows are sometimes seen on fences. It is very rare. 



Genus PtHAMNUSiUM, Latr. 



Body rather cylindrical. Elytra broader than the pronotum. 

 Antennae filiform, scarcely half as long as the body. Femora 

 of uniform thickness. The only European species is : 



R salicis, Fabr. (Plate XVIL, Fig. 18). This is reddish- 

 brown, with black elytra, with a blue or greenish shimmer. 

 It is found on willows and poplars, and the larva lives in 

 the wood of oak, beech, and elm. It is a native of Southern 



Europe. 



Genus Ehagium, Fabr. 



Elytra narrowed behind, flatly convex above. Hind femora 

 nearly reaching the end of the elytra, and somewhat thickened. 

 They are found on felled trees. 



