72 SERRICORNIA. | Zrachyse 
very short broad form, which is almost triangular, being wide in front 
and much narrowed behind; the antenne have the five last joints 
serrate, and the femora are not dilated ; the thorax is transverse, and is 
strongly produced in the middle of base ; the genus is rather an exten- 
sive one, comprising, as at present known, more than ninety species ; 
twelve of these occur in Europe, and the remainder are widely dis- 
tributed ; the majority, however, appear to occur in the Malay Penin- 
sula and the adjacent region; several species have comparatively 
recently been described from Siberia and the Amur district and Japan, 
which makes it probable that the genus will ultimately prove to be very 
much larger than is at present known. 
The larva of 7. minuta is figured in two yositions by Schiddte (Part iv., pl. ii., 
f.18 and 19); it presents a very curious appearance, owing to the very large pro- 
thoracic segment into which the small head is sunk, the very short mesothorax, 
which is, however, as broad as the prothorax, and the large number of scansorial 
warty appendages, of which eight pairs are dorsal and seven pairs ventral; the sides 
of the segments are also furnished with large knobbed prominences which are 
slightly setose, and the segments themselves are much incised at their junction; the 
ninth segment is much narrower than the preceding, and the anal appendage seems 
as if it were a continuation of the latter segment; the larva is light-coloured, with 
the scuta dark; these latter are small, with the exception of that on the prothorax, 
and vary considerably in shape, that on the metathorax being almost cruciform, and 
those on the first seven segments of the abdomen being almost hammer-shaped; the 
legs are obsolete: this larva mines the leaves of the hazel, on which plant the perfect 
insect is very often found, 
There are three British species, which may be distinguished as 
follows :— 
I. Upper surface black with more or less distinct whitish 
pubescence. 
i. Size larger; upper surface more depressed; elytra 
with punctuation not strong, and more or less con- 
Tact ie peal ek On eet ay ae amo 
ii. Size smaller; upper surface more convex; elytra with 
punctuation strong, and arranged in more or less : 
Fepular Tows = 2 2 6 © 6 = © =. % 2 + % 6 C, PUMIDA, 77D. 
II. Head and thorax coppery; elytra dark blue, with the 
punctuation rather strong, and arranged in more or 
less regularrows . +--+ + » © « « + + »« © »« J. TROGLODYTES, Gyll, 
T. MInvuTA, L. 
T. minuta, L. Black, with a slight eneous reflection ; form short 
and broad, narrowed behind; head smooth, very strongly impressed 
between eyes; antenne short, with the last five joints serrate ; thorax 
much broader than long, narrowed in front, with two transverse impres- 
sions on each side, finely and not distinctly punctured ; scutellum very 
small ; elytra broader than thorax, with shoulders strongly marked, 
rather depressed and uneven on disc, much narrowed towards apex, 
irregularly and indistinctly punctured, with four well-marked wavy 
bands of depressed whitish hairs, which are sometimes more or less 
obsolete; levs black, tarsi very short. L. 25-3} mm. 
By beating sallows, hazels, &c.; local; London district, not uncommon, Cobham, 
