STAPHYLINID-E. 
91 
compound lateral eyes, there are two small simple eyes, 
or ocelli, on the back of the head (as in the Hymenop- 
tera) ; Phlceobium also has a single ocellus in the 
same position. 
The parts of the mouth are well developed, though 
not quite so highly as in the Adephaga ; the labrum 
very often has a membranous margin, and is some- 
times furnished with appendages, or fringed or clothed 
with hairs ; the mandibles vary according to the habits 
of their possessors, but are often strong, curved, and 
sharp ; the maxillaa have no galea or palpiform lobe, 
and are not toothed at the apex, their palpi being 
four-jointed, with the apical joint often very small and 
subulate ; the labium is well defined; the ligula being 
distinct, narrow, and linear, often bifid at the extremity, 
and with its paraglossaa frequently conspicuous. 
The abdomen is often furnished at the apex with 
two fleshy papillae, from which a disagreeable odour is 
emitted when the insect is handled. It is, in nearly 
all, so long as to be capable of being bent forward 
and used in arranging the folds of the wings under 
the elytra. There are usually seven segments distinctly 
visible on the lower surface, but there is also another, 
by which it is articulated to the metathorax, and which 
is only visible on the upper side, when the elytra and 
wings are removed. In Erickson’s descriptions the 
sixth segment means the last but one, which is termed 
tho seventh by Dr. Kraata ; the latter being in reality 
correct, though the former seems to be right. 
The larvae of tho Brachelytra somewhat resemble 
the perfect insects, being of elongate, narrow shape ; 
and are found under similar circumstances. They 
differ but little in general structure among the different 
