156 
THE ORDER OF COLEOPTERA. 
The following are the genera of Lepturides : 
A. Wing-cases of ordinary length. 
B. Antennae knotted, each joint being abruptly enlarged at its extremity ■ .Desmocerus. 
B B. Antennae uniform. 
C. Eyes entire. Antennae approximate, and at some distance from the eyes. 
I). Body oblong, depressed, parallel ; elytra -with elevated lines Rhagium. 
D D. Body short and broad, mesosternum prominent, elytra blue Gaubotks. 
DDD. Body oblong and moderately tapering ; thorax without tubercles on the sides : 
Acmjkops. 
C C. Eyes with a very shallow notch. 
E. Hind tibim with a square excavation at the extremity, and with two long spurs at the up- 
per angle. Shoulders much elevated, elytra tapering Toxotus. 
E E. Tibial spurs moderate and terminal, or sub-terminal. Thorax with obtuse tubercles on 
the sides. Body moderately tapering Pachyta. 
E E E. Body elongate slender, parallel ; color blue Encyci.ops. 
C C C. Eyes with a distinct notch ; autennm inserted close to the eyes. Thorax bell-shaped and 
without tubercles on the sides. First joint of hind tarsi without brush beneath. 
F. Body moderately elongated 
F. Body much elongated; abdomen much narrowed at its extremity Strangalia. 
A A. Wing-cases imperfect. 
(r. Wing-cases very short MULORCHU8. 
G G. Wing-cases nearly as long as abdomen, but slender and separated at their extremi- 
ties. 
.Stenopterus. 
Desmocerus, Serv., contains two species, found on the blossoms of 
elder, one of which inhabits the Eastern States, and the other is found 
on the Pacific slope. The former is the D. palliatus, of Forster, a beau- 
tiful blue insect, eight or nine-tenths of an inch in length, with the 
basal third of the elytra a light bufl'-yellow, suggesting the idea of a 
cloak thrown over the shoulders, and expressed by the specific name 
palliatus. Acmicops, Lc., contains thirty-two described species ; Toxo- 
tus, Serv., nine; Pachyta, Serv., eleven; Strangalia, Serv., seven; and 
Leptura, Linn., seventy-six, besides eleven other species separated by 
LeConte under the generic name Typocerus. The other genera contain 
but few species each. The Bliagium lineatum, Oliv., is five or six- tenths 
of an inch long, and of a grayish color. The larvae burrow between the 
bark and the wood of the pitch-pine. Garrotes cyampennis, Say, is be- 
tween four and five-tenths of an inch long. The head and thorax are 
brownish-black, with an obscure tint of purple ; the elytra are much 
broader than the thorax, and of a metallic greenish-blue color. The 
Encydops cceruleus, Say, is a small, narrow, linear species, of a dark- 
blueish color, with reddish eyes. The eyes, as implied by the generic 
name, are perfectly round and without notch. 
Sub family LAAIIIDES. 
This sub-family is named from the genus Lamia, of Fabricius, a Greek 
word used to express some kind of bugbear, and suggested as the name 
of these insects, probably, on account of the menacing aspect of some 
