OCR Text |
Show 1886.] REV. H. S. GORHAM ON NEW COLEOPTERA. 157 with a marginal line round the entire edge uniting with the central channel in front; front margin deeply bisinuate ; sides hardly so much rounded in front as in S. chrysomeloides. Elytra longer than in that species, thickly and distinctly punctured, hardly any trace of sulcation or striation ; shoulders with a callus well raised, ending in a deep red spot, another spot near the scutellum, and a third between these two ; posteriorly are two small oblong spots (united in the specimen described) near the suture about one third from the apex, and another between these and the margin. There is a fine sutural stria for the whole length of the elytra, and the margin is narrowly reflexed. Legs and underside shining black; femora punctate, but more finely than in S. chrysomeloides; anterior pair in the male compressed at the tip and with a very small fine calcar above the spatulate compression. The tubercle on the apical ventral segment is squarish and impressed on its top so as to seem faintly bidentate. A single male specimen is all that Mr. Lewis secured of this species. CYMONES. Characteres plerumque ut in genere Encymon ; differt mesosterno haud transverso, prothoracis basi medio vix marginato, sulco transverso nulla, antennarum clava elongata, laxe articulata, articulis nono et decimo vix latioribus, maris tibiarum anticarum dente lato. I have no doubt that the species for which I propose this new genus is the Madagascar representative of Encymon, with which it is associated in the form of the mandibles. It has, however, a different facies, principally owing to the form of the pronotum, which is more convex, with its margins even and scarcely at all reflexed. The longitudinal basal sulci are present, but the transverse one is quite obsolete. The mode of toothing of the front tibia of the male is, moreover, quite different to that of Encymon; in the only species of that genus in which I have seen it take place, and which is figured by me (Endom. Recitati, tab. f. 10), the tooth is small and close to the apex ; here it is wide and strong and near the middle of the tibia. 1. CYMONES SHARPI. (Plate XVII. fig. 4.) Piceus ; prothorace elytrorumque apicibus flavis, illo guttis duabus magnis oblongis, punctisque tribus parvis nigris, capite femori-busque saturatius nigro-piceis; trochanteribus, femoribus basi, tibiis tar-sisque ferrugineo-flavis. Long. 9 millim. <S . Mas. Tibiis anticis dente basi latissimo, apice acuto infra medium, tibiis intermediis et posticis apice leviter incurvalis. Hab. Madagascar, Betsileo (Coivan). Head black, mouth and palpi testaceous, epistoma with a few indistinct punctures, crown smooth, antennal orbits raised. Antennae piceous, rufo-piceous at the base; the proportion of the joints as in Encymon till the ninth, which with the tenth and apical joints are elongate, only rather longer and more widened at their tips than |