suggests. When dry it is a thin hard dark-coloured scale, which finally curij 
and falls ofiF leaving the bark a little altered in appearance, but no doubt advv 
a stage in the process of decay. 
I know nothing of the oviposition of Abdera bifasciata ; but, throughout 
winter, the larvae may be found of various ages beneath the Corticium feediii 
those portions of it nearest the bark. Towards April and May they are full-fe 
each makes its way directly into the wood, usually for a short distance, tt 
sometimes for nearly half-an-inch, and then makes a little cell of its own le 
parallel with the fibres of the wood, in which it changes to pupa, the entran 
the cell being protected by being stufied with the sawdust removed in its forms 
The larva turns round with its head towards the opening before assuming 
pupal state. In emerging I think it usually has to enlarge this opening, 
perfect insect emerges in July. Though this is the usual habit of the larv 
often happens that the fungus begins to peel ofi" before they are full-fed. I bt 
this occurs only when the fungus is in its second year of existence. In this 
the larvse make their way into the superficial layers of the bark, in which 
seem to find suflBcient nutriment, possibly part of the mycelium of the fungc 
feed them to their full growth. 
The full-grown larva of Abdera bifasciata is 5 mill, in length ; its general asp( 
much that of a longicorn, the second segment, into which the head can be retra 
being the broadest, the head is oval, being rather longer than broad. The st 
jaws, seen from below, are gouge- or scoop-shaped, with a slight projection nea 
apex, on the upper-side. The labrum is as long as the jaws, rounded, with a fi 
of fine hairs, and a transverse line near its edge which does not seem to indica 
articulation. The maxilte have each a three-jointed palpus, and their inner ai 
are produced into an organ of similar shape to the palpus, fringed with short 
towards the extremity of its inner margin, and not appearing to be jointed tc 
rest of the maxilla, the labium, difficult to observe between the maxillae, appea 
be a rounded plate divided into a basilar half which seems to be dotted with obs' 
hairs, and from the margin of which two three-jointed palpi appear to aris* 
which the large basilar joints at least are united to the anterior half of the lab 
almost entirely hiding it, and the terminal joint (bearing a minute seta) is so s 
that its existence is doubtful : the antennae are four-jointed, the last joint beari 
stiff bristle. Beside the last joint, and in front of it, is a rounded body, whic 
either a separate joint or a process of the third joint (I have not satisfied myse 
this point). Behind each antenna, is a row of three blackish eye- spots, 
emarginate in front ; centrally behind these is a fourth, and at a little dist 
above this a fifth ; these two last are blackish circles, broadest in front. ] 
these are several bristles ; the body consists of twelve segments, they are so tr 
parent that much of the internal anatomy can be seen, some of it being obscure 
regularly disposed masses of white fat. There are three pairs of four-jointed 1 
the last joint being a brownish claw. Each segment has laterally a stiff loo 
hair, with two or three smaller ones ; the thirteenth segment having two la 
hairs and several smaller ones. There is a slight projection on the ventral sur 
of this segment, hardly perhaps of sufficient size to be called an anal tubercl 
pro-leg. There are ten pairs of spiracles, of which the first is situated below 
line of the others at the anterior border of the third segment ; the second at 
