254 RHYNCHOPHORA. [Trachodina. 
TRACHODINA. 
This tribe is extremely closely allied to the Pissodina, from which it 
differs by the strongly toothed femora, the inconspicuous scutellum, and 
the clothing of the upper surface ; the single genus T’rachodes is very 
nearly related to the Cryptorrhynchina through Acalles, but differs in 
not having the prosternum channelled for the reception of the rostrum. 
TRACHODES, Germar. 
About eight species are contained in this genus which are found in 
Northern Asia (chiefly in Siberia and Kamtschatka) and Northern and 
Central Europe ; they are small dull insects, with the elytra connate 
and gibbose, the prosternum emarginate at apex, the tibie bisinuate on 
their internal margin, and the posterior cox subglobose ; the femoral 
teeth are very large and strong; they are found in faggots, and very 
little, apparently, is as yet known about them. 
T. hispidus, L. (sqguumifer, Gyll.). Oblong, convex, blackish- 
brown, clothed with coarse blackish and ashy scales, rostrum, antennze 
and legs reddish-brown ; rostrum rather long, curved ; antenn inserted 
behind middle ; thorax as long as broad, rounded at sides, with a row 
of large dark raised scales on each side of centre and a lighter row 
towards margin; elytra dark with common wavy grey fasciz towards 
apex, alternate interstices with rows of large raised scales ; femora 
clavate, with very strong pointed triangular teeth. L. 2;-4 mm. 
In woods; by beating old faggots of oak and beech sticks; rare; near Carlisle 
(Heysham); New Forest (one specimen, May, 1850, Walker); Buddon Wood, 
Leicestershire (Bates, Plant, &c.); St. Leonard’s Forest (Power) ; it is also marked 
in Mr. Moncreaff’s list as trom Grange, near Gosport. 
ORCHESTINA. 
The members of this tribe are, with very few exceptions, easily known 
by the development of the posterior femora, which resemble those of the 
Halticide and enable the insects to leap greater or lesser distances 
according to their size and thickness, which is variable in the different 
species ; the rostrum is inflexed, and the antenne have rather a short 
scape ; the eyes are free and, as a rule, prominent; the elytra are con- 
siderably broader than the thorax, with the shoulders well marked and 
the tenth stria joined to the ninth behind the metasternum. 
The larve live on leaves, for the most part of trees; they mine the 
parenchyma, like the larvee of many Micro-Lepidoptera, and after attain- 
ing their full size they form a cocoon in their mines or galleries, from 
which the perfect insect in a short time emerges; the galleries may 
easily be detected by their reddish or brownish appearance and by being 
slightly raised above the surface of the leaf. 
