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Show 300 INSECTA. general, proportionably longer. These latter species have been sepa. rated from Pter?stichu~ to for~ a new genus, ~he Ster~pua, Meg.(!) Finally, we wlll termmate 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 pas: terior edge. Such appears to me to be the most distinguishingcha· racter of the genus PercutJ, Bonelli. Neither the relative lengthof the two last joints of the maxillary pal pi, the inequality in the pro· po1•tions of the mandibles, nor some slight sexual difference taken fl'om 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 . a•·e flattened above(2). MYAs, Zieg. These Insects resemble the Feronic:e which constitute the genus Cheporus, but their thorax is more dilated laterally, and narrowed near its posterior angles, immediately before which is a little emar· gination. The labial palpi terminate in an evidently thicker and nearly triangular joint. Two species are known, one from Hungary, the ./Jil. chalyb:eu1, and the other from North America, where it was discovered by Major Le Conte( 3). [The M. cyanescens, Dej .-Am. Ed.] Sometimes the mandibles are as long as the head, and extend con· siderably beyond the clypeus. The body is always oblong, and t,he (1) 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 Steropus lwttentotus (Scarites hottentotus, Oliv., Col. III, 36, 11, 19) were fo~ me1·ly placed among the Scarites. The Carabus madidus, Fab.; Faun. Insect, Eur., V, 2, a common species in some of the southern departments of France in Steropus. Count Dejean forms a new genus with the St. ltottentotus on account of the anterior legs, the tibia: of which are arcuated, and of some other charac· ters. (2) Carabus Paykulii, Ross., Faun. Etrusc., I, tab. V, f. C,-PerCU8 eben!~~, Charp. Hor. Entom., V, i. See also the Ann. des Sc. Nat. and Ann. des Sc. Phys., of MM. Bory de Saint-Vincent, Drapiez and Van-Mons. I refer the Jbal corsicus, Dej., to the same subgenus. (3) Other species, analogous in the form of their labial palpi, but with stouter mandibles, in which the tooth of the mentum is much larger, and peculiar to the East Indies, form the genus Trigonomota of Count Dejean, the characters tJ. which are given in the third volume of his Species des coleopteres. Here also should be placed the genus Pseudomorpha of Kirby, Lin. Trans. XIV, 98. ' COLEOPTERA. 301' tboral in the form of an elongated heart. Some of them resemble Scaritides and others Lebic:e. CEPHALOTES, Bon.-Broscus, Panz. Length of the antennc:e almost equal to half that of the body; their joints short, the first shorter than the two following- ones taken together; the right mandible strongly unidentated on the internal side; labrum entire( 1 ). SToMxs, Clairv. The antennc:e longer than the half of the body; and composed of elongated joints, the first of which is longer than the two following ones taken together; the middle of the internal side of the right mandible deeply notched; the labrum emarginate(2). The following · subgenus CATAsoopus, Kirby, Is distinguished from the two preceding subgenera, to which it otherwise approximates in the relative length of the third joint of the antennre, by the flatness of the body, by being proportionably wider, with a shorter thorax, by the elytra being strongly emarginate laterally at their posterior extremity, and by the elongation of the labrum. The eyes are large and protuberant. These are ornamented with brilliant colours, and at the first glance resemble Cicindelc:e or Elaphri(3). (1) Oarabus cephalotes, Fab.; Panz., Faun. Insect. Germ., LXXXIII, 1; Entom. Ind., p. 62. (2) Stomia pumicatus, Clairv. Entom. Helv. II, vi. (S) This subgenus was established by M. Kirby on one of the Carabici ( CataatllfJUS Hardwickii, Trans. Lin. Soc. XIV, iii, 1; Hist. Nat. des Coleop. d'Eur.II, vii, 8) of the East Inuies, which has a green head and thorax, the elytra of a greenish-blue with punctuated stria:, and the under part of the bouy almost blackish. M. Mac Leay, Jun.-Animl. Javan. I, p. 14-places the Catascopi in his family of the Harpalides, directly after the Chlrenii, and refers to it the C. tlegana, Fab., which M. Weber arranges with the Elaphri. He distinguishes them from another neighbouring subgenus, which he establishes undrr the name of Pericalus, by the antenna:, the second and third joints of which are nearly equal in length, whilst here the third is the longest; by the mandibles which are short, thick, and curved, instead of being directed forwards and nearly parallel; by the palpi which are short, thick, with the last joint ovoid and almost truncated, whilst those of the Pericali are slender and cylindrical; and finally by the head, which is wider than the thorax, a circumstance that does not occur in the Catascopi. Be· sides this, the eyes of the Pericali are very globular and protuberant, giving them some resemblance to the Elaphri and Cicindehe. He describes but one species- |