390 INSECTA. 



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. Ill, 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 oblongo-punctatus, Fab.; 

 Panz., Faun. Insect. Germ., LXXIII, 2 is found in the environs 

 of Paris J. 



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 Feronise, 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, proportionably 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 || . 



* The Platysmse described and figured by M. Fischer Entom. Russ., II, xiv, 4, 

 5 ; are probably analogous Abaces. 



f For the other species, see the Catalogue of Count Dejean, and the Faun. Aust. 

 of Duftschmid. 



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 Molojjs terricola (Scarites gagates, Id. XI, i,) andtheSfcro- 

 pus hottentotus (Scarites hottentotus, Oliv., Col. Ill, 36, 11, 19) were formerly placed 

 among the Scarites. The Carabus madidus, 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. 



|| Carabus Paykulii, Ross., Faun. Etrusc., I, tab. V, f. C, Percys ebenus, Charp. 



