ARTICULATA. 161 
Orpo II. Orrnocert. Antenne not geniculate, basal articulation not 
very long, and not received into a groove in the rostrum. 
Divisions: Zanaonides, Ithycerides, Camerotides, Antlharhini- 
des, Attelabides, Belides, Apionides, Ramphides, Cylades, 
Ulocerides, Oxyrhynchides. 
Sus-FAM. 2. SPURIL. ; 
Leaio 1. Palpi hidden, very short, antenne geniculate and clavate, 
tarsi pentamerous. Division: Dryophthorides. 
Lxcio 2. Palpi hidden, antenne straight, not properly clavate, tarsi 
indistinctly pentamerous. Divisions: Oxycorynides, Bren- 
thides. 
Lec1o 3. Palpi exserted and filiform, tarsi distinctly tetramerous. Di- 
visions : Rhinomacerides, Anthribides, Bruchides. 
Schcenherr excludes the Scolytide from the Rhynchophora, and Westwood 
places them at the end of them. They include various genera destructive 
to forest trees. 
The Longicornia (pl: 81, jigs. 44-60) have the antenne long and 
tapering, generally as long as the body, and not clavate; the eyes generally 
reniform, and the body elongated. The head is sometimes horizontal and 
sometimes vertical, the front generally impressed, the prothorax varying, 
being convex or flattened, transverse, globular, cylindrical; spinose, 
nodulous, or smooth ; presenting in Acrocinus a movable spine (umbo) on 
each side. The feet are generally slender, the tarsi clothed with short hair 
beneath, and the third articulation cordate. Some of the females have an 
Ovipositor to insert the eggs in the bark of trees. They are graceful in 
form, and many of them are brilliantly colored. Some run and fly with 
great facility, whilst others are tardy in their movements. Some are 
deprived of wings and confined to the ground and low shrubs. Some fre- 
quent flowers and other forest trees, and the larve of the latter are often 
destructive to useful trees. The beautiful American Clytus pictus, a species 
marked with yellow lines like fig. 51, is very destructive to locust trees, in 
the branches of which the larva bores. It also destroys young hickory 
saplings which have been cut for hooping casks. 
The larva of Oncideres cingulatus lives within the dead branches of 
hickory, eating the dead wood; and to supply it with this food, the female 
deposits the eggs in little perforations which she makes in the bark towards 
the end of the branches, which she kills, by gnawing a groove entirely 
round, through the bark and into the wood, which effectually accomplishes 
the object. The dead branch retains its position long after the dead insect 
has left it. The upright stem is often thus attacked, when a lateral branch 
shoots forth to supply its place, which may be similarly attacked the next 
year, and this sometimes happens for four or five years in succession, so 
that the top of a young hickory tree sometimes presents a curious and mu- 
tilated appearance. 
There are three families of Longicornia: Prionidw, Cerambycide, and 
365 
