88 DR. HARRIS’S REPORT. April, 
forated diametrically through with their cylindrical passages. Mr. 
Say has described three insects of this family which are very injuri- 
ous to the pines. 
Among the insects which facilitate the destruction of old trees are 
those belonging to the family Cucujiade. They are found beneath 
the bark, and in the bodies of trees upon the wood of which their 
larve subsist. They are of an oblong form, the body is more or 
less flattened, the thorax is square, the antenne are eleven-jointed, of 
moderate length, and often taper at the end ; the feet are not spongy 
beneath, and the joints are entire. 
In Parandra, a genus peculiar to America, the antenne are monili- 
form, or bead-like, and shorter than the body ; the feet are of mod- 
erate length ; the jaws (mandibles) are strong, prominent, and tooth- 
ed ; the body is more convex than in the other genera of the family. 
Parandra brunnea is not ‘uncommon in decayed trees. It flies 
abroad in the night. ‘This insect might readily be mistaken for a small 
Lucanus, and its habits are similar. 
In Cucujus, the body is quite flat, the head is broad behind the 
eyes; the triangular plate, covering the mouth and extending forwards, 
with the prominent jaws, give to the mouth the appearance of a 
short beak. The antennae are short, and granulated or moniliform. 
Cucujus clavipes is our largest and most beautiful species. The 
larva feeds under the bark of trees. When fully grown it measures 
about three quarters of an inch in Jength, and seventeen hundredths 
of an inch at its broadest part. It is very much flattened ; the head 
resembles that of the perfect insect in shape ; the antenne are three- 
jointed and longer than the head; the first three segments of the 
body are each furnished with a pair of robust feet ; there is no tho- 
racic shield, and no anal proleg ; the posterior margin of the eleventh 
segment is armed with four teeth, a small one on each side, and two 
larger ones beneath ; the last segment merely constitutes a small base 
to support an anal recurved fork ; each tyne of this fork has a small 
spine just above its base. When the insect becomes a pupa, the 
skin of the larva is left entire, except a small longitudinal fissure on 
the back of the first three segments. The perfect insect is devel- 
oped about the middle of May. 
The next insects to be described belong to the family of Ceram- 
