THK MALA.CODERM ATA. 
181 
single species known, P. Edwardsi, was for a long time 
only found in this country, where it is taken in Not- 
tinghamshire, Leicestershire, Lincolnshire, and Dorset, 
living in the old lichen-covered boughs of oak-trees. 
It is an oblong, convex, slightly pubescent, strongly 
punctured insect, with a dark thorax and grey elytra, 
more or less variegated with darker lines, and, 
unlike the Mycetophagidns, is very sluggish. 
The ClebiDjE (which are mostly brightly coloured) 
have the antenna? often clubbed ; the labrum distinct ; 
the tarsi provided with lamellae beneath and sometimes 
bilobed ; often only five abdominal segments ; the 
posterior coxae transverse, sunk, not approximated, 
and covered by the hind femora ; the body oblong, 
usually cylindrical, rather hard, and hairy ; the eyes 
kidney-shaped and notched ; and the head and thorax 
narrower than the elytra. They are remarkable, also, 
for usually having the labial larger than the maxillary 
palpi. 
In Tillus, Clerus, Opilus, and Tric/iodes there are 
five joints to the tarsi, and the pronotum is confused 
with the protlioracie parapleime, so that the thorax 
becomes cylindrical; but in the sub-family Enopliides, 
to which the genus Corynetes belongs, there are only 
four joints (the normal fourth joint being imperfectly 
developed) ; and the upper part of the thorax is 
separated from tho sides by a more or less conspicuous 
ridge. 
Tillus elongatus, a narrow black insect with red 
thorax (the male being rarely entirely black), per- 
forates old wood, and is sometimes found in elder- 
blossom. 
Clerus formicarius (Plate IX., Fig. 5), a regular 
