COLEOPTERA. 
373 
The emarginaticn of the mentum has a central tooth. The Hgiila is 
almost square, and its paraglossa; are salient and pointed. 
Casnonia, Lat . — Ophioncea, Kliig. 
fhe thorax almost like a truncated cone, or a cylinder narrowed 
anteriorly * * * § , 
Lhptotrachelus, Lat. 
Thorax cylindrical, and without any sensible contraction ante- 
riorly ; elytra entire or not truncated ; penultimate joint of the tarsi 
bilobate f . 
Odacantha, Payk. Fab. 
The same kind of thorax, but the elytra are truncated and the 
joints of the tarsi entire. 
Odac. melanura. Fab.; Clairv., Entom. Helv. II, v; Hist. Nat. 
des Coleop. d’Eur., II, x, 6. The type of the genus; three lines 
in length; greenish-blue; elytra, the extremities excepted, rus- 
set-yellow; base of the antennae, pectus, and a greater portion 
of the feet of the same colour; ends of the elytra blackish-blue, 
it frequents the neighbourhood of water, and is more particu- 
larly found in the north of France, Germany and Sweden +. 
Sometimes the exterior paljji are terminated by a thicker triangu- 
lar joint, or one resembling a reversed cone ; the head, directly 
behind the eyes, is suddenly narrowed, and has a triangular form, 
or that of a heart. 
Some in which the body is flattened, placed by Fabricius among 
his Galeritae, have all the joints of the tarsi entire, the thorax cord- 
ate and posteriorly truncated, and the mandibles as well as the max- 
illae of an ordinary length or but slightly salient. 
The first joint of the antennae forms a reversed and elongated cone. 
The ligula is square, and its paraglossse are usually as long as itself ; 
the middle of the emargination of the mentum is furnished with a 
tooth. These Carabici, of which the species indigenous to Europe 
are found under stones, bark, and most commonly in the vicinity of 
water, form the three following siibgenera. 
ZupHiuM, Lat. 
First joint of the antennae at least as long as the head ; exterior 
maxillary palpi much elongated §. 
* See Entom. Brazil., of Kliig ; the Spec. Gener., of Dej., I, p. 170; Hist. 
Nat. des Coleop. d’Eur., fascic. II, vii, fi. The species figured — C. cijanocephala — 
from the penultimate joint of the tarsi forms a particular division. It is found in 
Bengal. All the others, the principal of which is the Aftetahiis pensyh-anicus, L., 
belong to America, and have all the joints of the tarsi entire. American species, C. 
pensyh'anicu, rujipes. 
•h Odacantha dorsalis, Fab. 
J The Odacantha tripustidata, Fab., is a species of Notoxu*. 
§ Galerita olens, Fab. ; Clairv. Entom. Helv. II, xvii. A, a; Hist. Nat. des Co- 
leop. d’Eur., fasc. II, x, 3 . 
