1838. HOUSE—No. 72. 95 
Two species are common both to this country and to Europe. 
One of them is Callidiwm bajulum. It appears to inhabit pine wood 
and timber, whence it is frequently met with on buildings in the 
months of July and August. We are informed by Kirby and 
Spence, that the larva sometimes does material injury to the wood- 
work of houses in London, piercing in every direction the rafters of 
the roofs, and, when arrived at its perfect state, even penetrating 
through sheets of lead which happen to cover the place of its exit. 
One piece of lead, only eight inches long and four broad, exhibited 
twelve oval. perforations made by these insects ; and lead was discov- 
ered in the stomachs of the larve. 
The other species is Callidium violaceum, which Prof. Peck 
said he believed to have been introduced into Europe in timber ex- 
ported from this country. It is exceedingly injurious to the. sapling 
pines of Maine. The perfect insect makes its appearance about the 
last of May or the first of June. 
Nearly allied to the family of capricorn beetles, is another which is 
called Lepturiade. The insects contained in it were included for- 
merly in the genus Cerambyx, and many, if not all of their larve, 
are wood-eaters. In this family the antenne are of variable length, 
and inserted between the eyes, which are not kidney-shaped, but are 
nearly round; the body is elongated, and more ‘or less attenuated 
behind ; the thorax is trapezoidal or contracted before, and resem- 
bles a truncated cone; the feet are like those of the capricorn 
beetles. 
The only genus in this family to be noticed is called Rhagium, in 
which the antenne are short, the eyes large and prominent, and the 
thorax has a large spine on each side. 
The bark of the Pinus rigida, or pitch-pine, is often extensively 
loosened by larve at work beneath it, so that it falls off in large 
flakes, and the tree perishes. ‘These larve feed between the bark 
and wood, and when they are about to become pupz surround their 
bodies with a ring of woody fibres, and in this little cavity pass 
through their transformations. The perfect insect is fully formed 
before winter, and eats a passage through the bark in the ensuing 
spring. It is the Rhagium lineatum, of Olivier, which was thought 
by Mr. Say to be the only American species of the genus. ‘There 
