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Show 458 ll~SECTA. TENEBRIO, As originally arranged by Fabricius, and to which we will annex his Opatrum and Ortlwcera; they will serve for types of as many particular divisions. 1. Those in which the body is ova]; the thorax nearly trapezoidal arcuated latet·ally, or forming a semioval, truncated anteriorly: wider· than the abdomen, at least at its posterior margin, but slightly or not at all bordered; in which the maxillary palpi terminate by a secul'iform joint or one of an analogous figure, and where the antenore insensibly enlarge. In CaYPTrous, Lat.-Blaps, Fab. The body is convex and smooth above; the head exposed or but slightly received into the emat·gination of the thorax, and its anterior edge unemarginate; the eyes exterior or entii·ely outside of the anterior concavity of the thorax; and this last part insensibly inclined on the sides and but slightly emarginated before. The antennre are almost as long as the thorax, and most of their joints in the form of a reversed heart or turbiniform, the pen ultimates alone being more rounded or almost granose, but not transversal. The tibire are always narrow and elongated, and the spurs of their extremity tolerably salient( 1 ). 0PATRUM, Fab. Dej.-Phylan, Meg. The body generally less elevated and even frequently depressed; the head and eyes received posteriorly into a deep notch in the thorax, with a small anterior emargination in which the labrum is fixed. The thorax is depressed along its sides; the antennre are shorter than the thorax, mostly granose, and the last joints lenticular and transversal. The elytra ·are scabrous or striated. The spurs of the tibice are very small, and the two anterior are broad and triangular in several. 0. sabulosum; Silpha sabulosa, L.; Oliv., Col., III, 56, i, 4. Length of the body four lines; black; usually appearing of a cinereous-grey above; oval; thorax arcuated laterally, and rather ( l) Pedinus glaber, Lat., Gener. Crust. et Insect., 11, p. 164; He/op8 glabtr, Oliv., Col., III, 58, ii, 12; Blaps glabra, Fab., and some other undescribed specie• from Spain and the Cape of Good Hope. COLEOPTERA. 459 wider in its middle than the abdomen. Each elytron has three longitudinal elevated lines. each of which, on each sirlc, is accompanied by a range of little tubercles, arranged alter·natcly and frequently uniting with them; between the exterior margin and the first line, and between the last and the suture, there is also a series of similar tubercles. The anterior tibire are wider and triangular. Very common in all Europe in sandy localities, and appearing with the first fine weather in spring( 1 ). 2. Those in which the body is narrow and elongated, almost of the same width posteriorly or wider; where the thorax is nearly square, and at least almost as long as it is broad, and where the antenore form a thick club, or are abruptly dilated at the extremity. In some, the antennre are thick, cylindrical or fusiform, perfoliate, pilose, and apparently composed of but ten joints, the eleventh or last being very short and but little distinct; the second is as large as the following one. CoaTxous, Dej.-Sarrotrium, Germ. Where the antennre are cylindr·ical and terminated by a larger joint, forming a little club(2). 0RTHOOERus, Lat.-Sarrotrium, Illig. Where the antennre, wider in the middle, form a densely pilose club, with most of the joints transversal, and the last much narrower than the preceding ones( 3). The antennre of the others are of an ordinary size, simply granose, neithet• perfoliate nor pilose, and consist of eleven distinct joints. CHmosoELis, Lam. Two stout teeth on the outer side of the two first tibire; antennre terminating in a small and nearly globular, transverse club, formed by the two last joints( 4). ToxxouM, Lat. The tibire simple; club of the antennre compressed and formed by (1) The Opatr., 7, 8, 10, Oliv., lb. See Encyc. Method., article Opatrum, and !he Catalogue, &c., of Dejean. The genus Pltylan, Meg. and Dej ., presents no character which clearly distinguishes it from that of Opatrum. (2) Sarrotrium celtis, Germ., Insect. Spec. Nov., P· 146. (3) Hiapa mutica, L.; Panz., Faun. Insect. Germ., I, 8. (4) Ohiroacelis bifenestra, Lam, Ann. du Mus d'Hist . Nat., No. 16, XXII, 2;ntJebrio digitatm, Fab. |