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Show 450 INSECTA. Here the thorax is nat·row, either cylindrical or in the form of an elongated heart, truncated at both ends. Such are TAOENIA, Lat.-Stenosis, He~bst.-Akis, Fab. Where the antennre are almost perfoliatc with the thit·d joint · hardly long~r that~ the following ~nes, an~ t_t:e eleventh. o1• last very small or united wlth the precedmg one. I he head 1s elongated posteriorly, and bot·ne on a kind of neck or knot. The thorax is in the form of an elongated heart truncated at both ends. The abdo· men is oval( 1 ). PsA.MMETiaHus, Lat. Where the antennze are composed of turbinifot·m joints, of which the third is much longer than the following ones, and tlie eleventh ot• last, as large as the preceding, is very distinct. The head and thorax form a long squat·e of equal width. The abdomen is almost oval, and truncated at its base(2). There, the thorax is at least as wide as the abdomen, and of an almost orbicular or square form, rounded latel'ally, and either iso. metrical or wider than long. SoAuRus, Fab. Where the last joint of the antennre is ovoido-conical and cion· gated; where the thorax is almost isometrical, and where the ante· rior thighs are strongly inflated and ft·equently dentated in the males. The tibire are lqng and narrow. These Insects are peculiar to the hot and western parts of the eastern continent(3). SaoTOBius, Germ. Where the last joint of the antennre is hardly longer than the pre· ceding and in the form of a reversed top; where the tho1·ax is evi· dently wider than it is long, and the lateral edges are strongly arcu· ated; where the thighs differ but little in size, and when the anterior tibire are in the form of an elongated triangle, and angular. These Heteromera are peculiar to South America( 4). The other Pimeliarire, with moniliform aotennre and the mentum (1) Lat., Gener. Crust. et Jnsect., II, p. 149;. Herbst., Col :, VIJT, cxxvii, 1-S .. (2) A subgenus established on some undescribed Insects from Chili. (3) Oliv., Col., III, No. 62; Lat., Gener. Crust. et Insect., II, 159; Encyc. Method., article Scaure. (4) Germ., Insect. Spec. Nov., p. 136. COLEOPTEUA. 451 ' en t're are remat·kable for the lateral, angular 01' strongly dentiform 1 , • , • • d'latations of the tho1·ax. I he mHldlc of . the back presents a sul-c: ted carina terminated anteriorly in the manne1· of a rounded and bilobate gibbosity. The late1·al margins of the head are briefly dilated. The labrum i~ entirely exposed and of an ordinary size. The eyes arc more prominent than in the other Pimeliarire; the antenn: e, besides, are pilose or pubescent. The elytra are. very unequal. SEPIDIUM, Fab. They are found in ~he southern countries of Europe and in Africa( I). The last Pimcliarire, the mentum as in the preceding one:c;, being unemarginate superio'rly, arc removed from the latter by the form of the joints of theil· antcnnre; they are mostly cylindl'ical or in the fot·m of an elongated and reversed cone; the three or fou1· last are alone rounded, and either ovoidal, turbiniform or hemispheri· cal. The labrum is entirely exposed, and the marginal dilatation of the head covering the origin of thc:;e organs is but slightly prolong· ed, as in Sepidium. The eyes arc nearly round or oval, entire or but slightly emarginate and prominent; the thorax is depressed, some· times dilated on each side in the manner of an angle, sometimes narrower, but sulcated and carinated above; the last joint of the antennre is 'evidently longer and thicker than the preceding. These Insects are proper to the Cape of Good Hope. Such are the TnAOIIYNOTus, Lat.-Sepidium, Fab.(2) There, the eyes are nanow, elongated, and almost flat. The thorax is convex, almost orbicular, emarginate before, truncated poste· riorly, without angular dilatations and do1·sal carina. The second joint of the antennre is, at most, the size of the preceding. Motunrs, Lat.-Pimelia, Fab. Oliv . ....:..Psammodes(3), Kirby. The second tribe of the Melasoma, that of the BLAPSIDEs, receives its denomination from the genus BLAPS of Fabricius. The }liaxillary palpi terminate by a manifestly securiform (1) The Sepid. triwspidatum, variegatum, and cristalum of Fabricius. (2) The Sepid. reticulatum, rugosfl,m, vittatum of Fabricius; the S. acuminatum o~ Scha:nherr. A species, which Count Dejen.n calls the cucurlioid~, and figured by De Geer, forms a separP-te division. (3) The Pimeli~ striata, unicolor, gibba of Fabricius. ·~ec Lat., Gener. Crust. etinsect., II, p. 148;-P.,ammodea longirornis, Kit·b , Lin. Trans, XIT, xxi, 13. |