40 
TIIE ORDER OF COLEOPTERA. 
apart from this sexual, and therefore often unavailable character, the 
Chkeniides can usually be distinguished from the Carabides proper by 
the presence of the tibial notch, and by their smaller size and more 
varied colors ; from the Scaritides by the absence of the gap between 
the thorax and the elytra; from the Brachinides by the thorax and ab- 
domen never being of contrasted colors, and by their simple claws ; and 
from the Harpalides by their usually lighter colors and silken surface. 
But a considerable number of species which are black and hairless, like 
the Harpalides, are included with the Chkeniides proper on account of 
the structure of their feet. But these we shall explain more particularly 
in our references to particular genera. 
In a strictly scientific point of view, the Chkeniides can scarcely be 
regarded as forming a sub family distinct from the Harpalides, but it is 
a matter of convenience, in practice, to subdivide very extensive groups. 
If we regarded structural considerations alone, a large proportion ot the 
Carabid® would have to be united in one great division, whilst certain 
anomalous genera such as Omophron , Ozccna, Morio, and a few others, 
would really constitute the types of distinct sub-families. 
A. Body hirsute ; head 'attached by a 'short neck ; abdomen pedunculated ; size below medium ; 
colors varied with fulvous and black PaxagasUs, .1 sp. 
A A. Body finely pubescent; bead without neck; abdomen sessile; thorax narrower than abdo- 
men; size about medium ; colors mostly green or blue-black Cm .emus, :15. 
AAA. Body glabrous ; thorax nearly or quite as wide as abdomen ; size medium or above ; color 
black. 
B. Body elongated or elliptical ; anterior angles of the thorax advanced ; elytra oarlnatcd near tho 
margin ; color black, usually with rich violet or metallic tints Dicalus. 21. 
BB. Bo ly oval; thorax and elytra, ordinary color black. 
C Head broad and obtuse; thorax a little narrower at base than elytra; montum without 
tooth....' DU'LOCIIIIIT.A, 3. 
C C. Head small and pointed; thorax as wide at base as elytra ; montum toothed Oopks, h. 
A A A A. Body glabrous ; thorax small ; size small ; color light red with black spots. .Bapisiek, 8. 
Panagieus contains two N. A. species, the crucigerus and fasciatus of 
Say, both of which are rare. The generic name means holy, in allusion 
to the arrangement of the spots on the elytra, in the typical species, 
somewhat in the form of a cross. Chlainius contains many species, one 
of the largest, most beautiful, and commonest of which is the Ghlwnius 
sericcus of Forst. (fig. 12), a fine green insect, with yellow legs, and clothed, 
like the rest of the species, with a microscopically fine silken down, or 
pubescence, which can scarcely be seen directly from above, but which 
is quite distinct when viewed side-ways, with the aid ot a lens. Dicuilus 
(two-pitted, in allusion to the hollows on the thorax) contains a number 
of rather rare beetles, some of which are pure black, but most ot them 
are very richly tinted. They can be distinguished from the black Har- 
palides by their more elongated form, and more particularly by tho 
shape of their thorax, which is almost square, with its anterior angles 
advanced, and considerably turned up at the sides. 
