196 
BRITISH BEETLES. 
from Canadian examples ; — much timber coming to us 
from North America. Its transformations have been 
accurately described in the Linnean Transactions, 
vol. v., by Kirby ; from whose account it appears that 
the larva mines galleries on the. surface of felled fir- 
trees, under the bark, burrowing deeply and obliquely 
into the solid wood before changing to pupa. Its 
mandibles are very stout and solid, resembling two 
sections of a cone applied against each other for the 
whole of their flattened sides. 
C. alni (Plate XIII., Fig. 3) is very small, and 
elegantly variegated : it occurs plentifully in hedges, 
&c., both on flowers and in dry twigs. 
H. bajulus, a dull blackish species, variegated with 
greyish down, and having two shining black marks on 
the thorax, is occasionally taken near London ; where 
its larva has been known to do considerable damage 
in the timber of houses, even penetrating sheets of 
lead. 
A. striatum , — very dull, entirely black, and slug- 
gish, — occurs in Scotland, settling on freshly-cut pine 
stumps. 
The Clytina have the thorax nearly globose, and 
are represented by one genus, Clytus ; the species of 
which somewhat resemble wasps, being mostly black 
with yellow bands : their larva; make circular holes in 
palings and poles, &c. C. arietis is very abundant in 
flowers, &c., about J une. 
The Ohriina have the thorax cylindrical, constricted 
at the base; the antennae setaceous, never less than 
the body in length ; the elytra entire and parallel, and 
the femora clavate. 
Obrium cantharinum, a small, shining, entirely red- 
