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Show 284 INSECTA. length; body fulvous with black elytra, terminated by a yellow. ish-fulvous spot; elyu·a slightly striate, the stric:e punctate with two more deeply impressed puncta ncar the thit·cl, commencing from the suture(!). In the following, the thorax terminates posteriorly in a straight line without any ccntt·al projection. PLooJIIoNus, Dcj. The antenuc:e almost g•·anose; last joint of the labial palpi large, nearly sccuriform; four fit·st joints of the tarsi ~hort, in the formof a reversed heart, the fourth bilobate(2). OnTuoGoNrus, Dej. Similar tarsi; but the antennre arc filiform, and the external palpi tenninated by an almost cylindt·ical joint(3). CoPTODERA, Dej. The palpi of the pt·eceding; antennre more OI1 less granose; three first joints of the antel'iot· tat·si short and wide; the same of the four posterio1· tarsi, almost filifot·m; the penultimate joint of all bifid, but not bilobate. All the species quoted by Count Dejean are foreign to Europe, and belong, generally, to America( 4). 2. The second section, that of the BrPARTITI,-Scaritides, Dej.which in relation to their habits might also be styled Fossores, is composed of Carabici with elytra either entire or slightly sinuated at their posterior extremity; having frequently granose and geni· culate antennce; a broad head, large thorax, usually shaped like a cup or almost semi-orbicuiar, and separated from the abdomen by an interval which causes the latter to appear pediculated; the legs generally but slightly elongated, their tarsi usually sho1·t, and simi· lar in the two sexes, or nearly so, without any br·ush beneath and sim· ply fur·nishe'd with ordinary hairs or cilia. The two anterior tibia: are dentated, and in several palmated or digitated; the mandibles frequently strong and dentated. There is a tooth in the emargina· tion of the mentum. They all keep on the ground, conceal them· (I) Sec op. cit. Add of American species, ti1e Leb. analis, vittata, quadrivittata, fuscata, ml/1· ginicollis, viridis, and the L . borea, solea, and grandi.,, of Hentz, new species . .llm.Ed. (2) Op. cit. (J) Dejean, Spec. I, p. 279: all the species foreign to Europe. Near this sub· genus may perhaps be placed that of the Ilexagonia, Kirby, Lin. Trans., XIV. ( 4) In tbc United States: C. signata, and C. mrata, Dej. ./lrn. Ed. COLJ<~OPT.EH.A. 285 selves either in holes which they excavate, or under stones, and fr·e-ucntly only leave their retreat at night. They are usually of a ~oiform black. The larvce of the Ditomus bucephalus, the only one that has been observed, has the form and mode of life of the larvre of the Cicindclre. They are mol'e particularly proper to hot countries. The three first subgenera, on account of thcit· labial palpi, which are terminated by a larger, sccuriform or triangulat· joint, form a particular group; the last of these subgenera leads us to Scarites, whilst the fit·st, which, as respects the absence of the emargination in the internal side of the two anterior tibire, constitutes an exception, seems to connect itself with the first subgenera of the family. They all have stout and dentated mandibles. The external maxillarypalpi terminate in a rather larger joint; the thorax has the form of a cup or tl'uncatcd heart; the abdomen is pediculated. Two of the subgenera of this group form a special subdivision. Their anterior tibire are not palmated. Their antennce consist of cylindrical joints, or such as resemble reversed cones. The mentum covers the whole under part of the head as far as the labrum, and frequently exhibits no transverse suture at its hase. The body is much flattened, and is apterous in several. They all belong to the eastern continent or to New Ilolland. ENOELAnus, Bon. The inner side of the anterior legs \.memarginate; first joint of the antcnn::e but little elongated and almost cylindrical, the third shorter than the second; middle of the superior margin of the ligula projecting in the manner of an angle or tooth; thorax almost in the form of a broadly truncated heart, the posterior angles slightly dilated and pointed; labrum emarginate or nearly bilobate. Encel. gigas, Bon., Mem. of the Acad. of Sc. of Tur. The only species described. From the coast of Angola. SraGONA, Lat.-Cucujus, Gale'rita, Fab. A very decided cmargination on the intet·nal side of the two anterior tibire; the first joint of the antennc£ elongated, for·ming a reversed cone, and the second shorter than the third; summit of the ligula straight, without any projection; thorax almost in the shape of a cup, near·ly as long as it is broad, and without posterior projections; the labrum dentated. ' Some arc apterous and have an oval abdomen( 1 ). The latter is ------~----------------------------------------- (I) Siagonrt rujlpes, Lat. Gencr. Crust. et Insect., 1, vii, 9; Ct1cujus rujipcs, Pab.;-Siagonajiescipea, Ucj., Spec. 1, p. 359. |