THE LONGICORNIA. 
195 
which may be seen in June flying strongly in the hot 
sunshine : the males, in which the antennae are very 
long, are by far the most active; and it has been 
remarked that the -peculiar odour, — which is strongest 
in the female, and especially at the coupling time, — 
acts probably as an attraction to them. A live speci- 
men, imprisoned for a short time in a handkerchief, 
will impart an agreeable and enduring scent to it. 
This insect, which is rather narrow, long, blue or 
coppery-green in colour, and somewhat shagreened in 
texture, possesses in a marked degree a habit found in 
most Longicornia, viz. that of making a loud, sharp, 
squeaking noise, by moving the head and prothorax 
briskly up and down, the inner part of the hinder 
margin of the latter rubbing against the smooth part 
of the front of the mesothorax. 
The Gallidiina are somewhat depressed, and have 
the head inserted in the thorax almost up to the eyes, 
the labrum small, the thorax with no lateral spine, the 
femora nearly always clavate, and the front and hind 
coxae usually somewhat approximated. 
Three genera are found in England, viz. Callidium, 
Hylotrupes, and Asemum. The species of the former 
are of considerable brightness : they frequent fir- 
wood, &c., and thus are liable to get transported from 
one locality to another in building materials, &c. It 
has, indeed, been suggested (and with apparent reason) 
that one, if not more, of the species iu this genus, now 
certainly considered as indigenous, have been in this 
way introduced from abroad. G. violaceum, a dull 
violet-coloured, flattened insect, was formerly of great 
rarity, though now very common in many parts of the 
country; and it is impossible to distinguish British 
