148 BEETLES. 



larva lives in the shoots of cherry and walnut-trees, as well 

 as in those of alder and elm. It is rare. 



* S. populnea, Linn. (Plate XVII., Fig. 11). This species has 

 yellowish-grey pubescence, with paler spots on the wing-cases. 

 The larva lives in excrescences on the stems of the aspen. 



Genus Polyopsia, Muls. (Tetrops, Steph.) 



Elytra twice as long as the breadth of both. Eyes completely 

 divided into two. 



* P. prceusta, Linn. (Plate XVII., Fig. 12). Elytra, except 

 the extremity, yellowish-brown. Legs yellowish-brown, with 

 blackish tarsi. It is found on apple and plum blossom, and the 

 larva lives in dry twigs. 



Genus Oberea, Muls. 



Elongated, cylindrical beetles, without lateral projections 

 on the pronotum. Wing-cases very narrow, obliquely trun- 

 cated or rounded at the extremity. The larvae live in the 

 pith of bushes, and the beetles are found on the leaves. 



* 0. oculata, Linn. (Plate XVIL, Fig. 13). This is an 

 orange -coloured beetle, with the antenme, wing-cases, and 

 two spots on the pronotum black. It is found on willow 

 and hazel. It is rare in Britain. 



0. pupillata, Gyll. (Plate XVIL, Fig. 14). This species 

 resembles the preceding, but has the wing-cases yellow at 

 the base. The larva lives in the stalks of bed-straw. It 

 inhabits most parts of Central Europe. 



Genus Phytcecia, Muls. 



Wing-cases generally narrowed behind, somewhat broader 

 than the pronotum. Eyes strongly emarginate. Legs short. 

 There is a large number of species, which live on various plants. 



