INSECTA. 
390 
of shorter joints, or are nearly granose, have been formed into a new 
genus, styled Cheporus* * * § . 
The F. striola ; Carabus striola. Fab, ; Carabus depressus, 
Oliv., Col, III, 35; IV, 46, is often found in the cold or humid 
localities of the forests in the environs of Parisf, 
Sometimes the thorax, always terminated posteriorly by two well- 
marked or acute angles, is evidently narrowed behind. Its figure 
approaches more or less to that of a truncated heart. 
Of these species, several have the body depressed or plane above, 
and the antennae composed of elongated joints, rather obconical than 
turbinated. They are distinguished generally by Bonelli under the 
genuine name of Pterostichus. They more particularly inhabit the 
high mountains of Europe, and Caucasus. 
But a single species — Carabus oblong o-punctatus, Fab,; 
Panz,, Faun, Insect, Germ,, LXXIII, 2— is found in the environs 
of Paris 
Others, whose antennae are almost granose, have the body convex 
above, and proportionally wider, with a shorter abdomen. They 
form the genus Molops, Bonelli, which evidently leads to other very 
analogous Feroniae, but where the posterior angles of the thorax are 
rounded, and the abdomen oval, the exterior angle of the base of the 
elytra being obtuse or non-salient. The body and antennae are, in 
general, propoi’tionably longer. These latter species have been sepa- 
rated from Pterostichus to form a new genus, the Steropus, Meg §, 
Finally, we will terminate this subgenus with species generally 
large, in which the thorax almost always has the form of a trun- 
cated heart, and the base of whose elytra has no transverse fold, 
presenting almost a smooth space without any well-terminated poste- 
rior edge. Such appears to me to be the most distinguished charac- 
ter of the genus Percus, Bonelli. Neither the relative length of the 
two last joints of the maxillary palpi, the inequality in the proportions 
of the mandibles, nor some slight sexual difference taken from the 
latter annuli of the abdomen, clearly distinguish it from the other 
subgenera. These species are exclusively confined to Spain, Italy, 
and the great islands of the Mediterranean. Some of them are flat- 
tened above 1| . 
* Tlie Platysmae described and figured by M. Fischer — Entom. Russ., II, xiv, 4, 
5 ; — are probably analogous Abaces. 
'i' For the other species, see the Catalogue of Count Dejean, and the Faun. Aust. 
of Duftschinid. 
J For the other species, see Dejean’s Catalogue and the Entom. Russ,, Fischer, 
II, p. 123, xix, f. 1 ; xxxvii, 8, 9. I coincide -with the opinion of the latter, that the 
G. myosodus, Meg., does not essentially differ from Pterostichus. 
§ See Dejean’s Catalogue, and the Insect. Spec. Nov., Germar, I, p. 26, et seq. 
Some species, such as the Molops terricola (Scarites gagates, Id. XI, i,) and the Stero.. 
pus hoftentotus {Scarites hottentotus, Oliv., Col. Ill, 36, 11, 19) were formerly placed 
among the Scarites. The Carabus madidtcs, Fab., Faun. Insect., Eur., V, 2, a com- 
mon species in some of the southern departments of France is a Steropus. Count 
Dejean forms a new genus with the St. hottentotus on account of the anterior legs, 
the tibiae of which are arcuated, and of some other characters, 
II Carabus PaykuHi, Ross,, Faun, Etrusc,, I, tab. V, f. C , — Percm elcnus, Charp. 
