| OCR Text |
Show 292 INSECTA. Hatpalicus, Dej.( 1 ), includes those, otherwise similar to the last in th pointed termination of the posterior extremity of their elytra in the males of w' hich the four anter1· or tars1· are (1 1'1 ate d ; the three o' r foure first joints are in the form of a reversed heart or triangular, and nearly all terminated by acute angles; they are usually furnished underneath (the Ophoni excepted) with two ranges of papillre or scales, with an intet·mediate linear space. The body is always winged, and generally oval and arcuated or convex above; the thorax is wider than it is long, or at most nearly isometrical, square o1· trapezoidal. The head is never suddenly con. tracted posteriorly, and the antennce are equal throughout, orslightly and insensibly thickened near the extremity. The mandibles are nevet· very strong. The exterior palpi are terminated by ano\'alor fusiform joint, longer than the preceding one. The tooth of the emargination of the mentum is always entire, and in some is want. ing(2). The legs are robust, the tibice spiny, and the hooks of the tarsi simple. The intermediate tarsi, even in the females, are short, and, with the exception of the dilatation, nearly formed like the anterior. These Carabici prefer sandy and hot localities. This section is composed of the genus Harpalus, as limited by Bo. nelli in his tabular view of the general distribution of the Carabici. New sections have still more diminished its extent. They are all subordinate to the three following divisions. The characters of the first are: the emargination of the mentum unidentate(3); labrum emat·ginate; head and anterior extremity of the thorax as wide as the abdomen or wider( 4 ). It comprises three subgenera. AoxNoPus, Zieg. Dej. Filiform antennce, composed of short but cylindrical joints; tho· rax insensibly narrowed f1·om before back wards, with the posterior (1) This appellation harmonizes with those of the two following sections,Md is founded on an exclusive chat·acter: it therefore seems to me to be preferable to that of 1/arpalici, employed by Bonelli. (2) The ligula, as in the two following sections, is always remarkably salien~ obtuse or truncated at the end, and accompanied by two distinct, membranous para glossa: in the form of auricles. (3) If the Cyclosomi have the four anterior tarsi dilated, they will form a fourth division on account of the two teeth in the emargination of the mentum. (4) The head large; paruglossre rather broad in comparison with the true ligula, and rounded at the end; second joint of the antenn.e somewhat shorter than the third; intermediate tarsi of the males rather less dilated than the anterior. COLEOPTERA. 293 les very obtuse or rounded; mandibles destitute of teeth; tooth :~~he emargination of the mentum widely truncated( 1 ). DAPTUS, Fisch.-.9cinopus, Dej. The antennce, from the fi~th joint, moni~iform; ~bora~ sudd~nly ed towards its postertor angles, wh1ch termmate m a pomt; narrow • . • · . f tl1e mandibles proJecting and very pomted; the four anter10r ~eo . . tibire, those of the males particularly, covered with very small spines(2)· Near Daptus should apparently be placed the genus Pangus of M. Megerle, mentioned by count Dejean in his catalogue. In examining one of the two species (the pensylvanicus), refer:ed b the latter to this genus, I could discover no character whtch s:ould distinguish the section in question from the preceding one. The second division consists of Harpali, in which the emargina· t. n of the ventum is also unidentate, but where the mot·e or less oval 10 • • 1 or ovoid body is narrowed befot·e, and the labrum entlre, or s1mp Y somewhat concave. They form the HARPALus, Dej: Or the true Harpali. One of the most common in all Europe is H. ceneus; Carabus ameus, Fa b.; Panz. Faun. Insect. Germ. LXXV, 3, 4. Body about four lines in length, and of a shining black· antennce and legs fulvous; thorax and elytra most common· ly gre~n, or cupreous and brilliant, sometimes of a bluish black. The thorax is transversal, narrowed posteriorly, and the lateral and posterior margins delicately reflected, with a punctated depression on each side near the posterior angles. The elytra are striated, with an incisure near the extremity, and little depressed puncta between the exterior strice. This insect has also been called the Proteus, on account of the variety of its colours.(3) The total absence of a tooth in the emat•gination of the mentum (1) Harpalus megacephalus, Lat., Gener. Crust. et Insect. I, P· . ~!06; Carabua megatephalua, Fab.; Ross. Faun. Etrusc., Append., tab. III, H; .llcmopus megace· phalus, Dej. Catal. . (2) Jlcinopus maculipenrtis, Dej.; Dactus pictus, Fisch., Entom. Russ .. II, xxvJ, 2, tlvi, 2; D. vittatua, Id., lb., 7, var.? Ditoma vittiger, Germ.; D. chloro~tcus, Id. lb. (3) For the other species, see the Catalogue, &c. of Count DeJean, genus Harpalus, p. 14, and for their synonymes Schrenherr's Synonymia Insectorum, and the Faun. Aust. of Duftschmid. Fabricius has described but few of them, of which we will mention those he calls caliginosus, rujicornia, binotatm, tardus, hero8, analia, ftavilabris, &c. The Oarabua aignattut, and hirtipea of Panzer also constitute a part of this subgenus. |
