152 
THE ORDER OP COLEOPTERA. 
F F. First joint of antennae at least ns long as tlio third Mat.lodon. 
C C. Thoracic margin almost wanting, with a short spine ; side pieces triangular ; head vorti- 
CA J Tragosoma. 
B B. Eyes fiuely granulated ; colors variegated ; thorax rough, without lateral spine SrilENOSTETHUB. 
Parandra , Latr., contains two species, one of which, the P. brunnea, 
Fab., is common. It is about seven-tenths of an inch long, and of a 
glossy mahogany-brown color. The other species, P. polita , Say, is 
much more rare. It closely resembles the other, but can be distinguished 
by its head being as wide as the thorax. 
Prionus, Geoff., contains many species. The two most common are 
the P. imbricornis of Linnaeus, less than an inch long, of a mahogany- 
brown color, with long imbricated antenme, the joints lapping one 
upon another; and the P. brevicornis , or short-horned Prionus, of F ab- 
ricius ; the antenme of the female are scarcely a third as long as the 
body, but those of the male are much longer. This species is black, 
the male an inch and a quarter, and the female an inch and a half or 
more in length. 
Derobrachus , Serv., contains one large brownish-yellow species found 
in the Middle and Southern States. 
Orthosoma, Serv., contains one common species, the 0. cylindricum, 
Fab., a long, narrow, brown insect, an inch and a quarter in length. 
* Ergates, Serv., has but one species, from California, originally de- 
scribed by Dr. LeConte under the name of Trichocnemis spieulatus. 
Mallodon , Serv., contains several species, none of which are common. 
Tragosoma, Serv., contains but one species, the T. Harrisii, Lee. 
Sphenostethus, Hald., contains but one species, the S. serripennis , Hal- 
deinan, but previously described by Buquet under the name of Solenop- 
era Taslei. It is of medium size, of a blackish-brown color, and inhab- 
its the Middle and Southern States, but is nowhere common. 
i" / \ 1 0 
Sub-family CERAMBYCIDES. Uca-c, /' 
[Fig. 75.] 
The Cerambycides are much more numerous and diversified than the 
Prionides, and are often ornamented with bright and variegated colors. 
They differ from the Prionides chiefly in having the sides of the thorax 
rounded, without a salient margin, but 
sometimes furnished with a single spine 
or tubercle on each side, and from the 
Lamiides in having the head sometimes 
horizontal, but usually more or less in- 
clined, whereas in the Lamiides it is ver- 
ticil. 
It must be remarked however that the 
lan-^Ttwi? B^pen™howf n } m th6 _ e2: face may assume a vertical position in the 
“‘Tefe/ haSjoin alls Cerambycides, when the head is bent 
j.X"5 strongly downwards, but the transition 
^d'{uwu A ii7f d C^fwtkXv m ‘ mdible ' from the occiput to the face is here usu- 
