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Show 1877.] MR. M. JACOBY ON NEW COLEOPTERA. 511 to the base slightly sinuate, with the posterior angles depressed and acute; a transverse depression, bounded on each side by a short longitudinal ridge, is situated near the base. Surface moderately convex, entirely impunctate; scutellum broad, semiovate, smooth. Elytra broader at the base than the thorax, slightly widened behind, apex rounded; a short longitudinal depression is placed near the base of the shoulders. The entire surface of a light brick-red colour without gloss, finely and closely punctate ; underside and legs black. Length 3k lines. Hab. Guatemala. Collected by Mr. O. Salvin. Genus MEGASCELIS, Latreille. 2. M E G A S C E L I S PURPUREICOLLIS, sp. nov. Elongate, rather robust. Head shining coppery red, closely punctate, covered at its lower half with rather long golden pubescence, and traversed through its entire length by a distinct median groove ; eyes emarginate ; epistome greenish black ; sides metallic, separated from the front by several strongly raised tubercles ; antennse with the first three joints testaceous, the rest fuscous. Thorax cylindrical, constricted distinctly behind the middle, of the same colour as the head, very finely punctate and rugose, covered almost entirely by yellow golden hair. Scutellum subquadrate, clothed with greenish golden pubescence. Elytra parallel, dark purplish, with about ten rows of elevated longitudinal ridges, the interspaces of which are distinctly transversely wrinkled, covered entirely with short golden pubescence, more strongly marked along the suture and the lateral margins, and plainly visible to the naked eye. Body below fuscous, with a metallic hue and silvery pubescence; legs flavous, tarsi almost black. Length 3 lines. Hab. Chontales, Nicaragua. Collected by Mr. Janson. CLYTHRINyE. Genus D A C H R Y S , Lacordaire. 3. D A C H R Y S BIPARTITA, sp. nov. Oblong, widened behind ; head distinctly and somewhat coarsely punctate, especially near the inner border of the eyes, black, shining ; antennse with the four basal joints fulvous, the rest black, the latter colour also occupying partly the first joint in some specimens; in length they do not reach to the base of the thorax, and have the first joint very swollen and almost globular, the second extremely short, the third nearly three times the length of the second and thickened at its apex, the fourth a little longer than the second, and the rest transverse, subquadrate. Thorax transverse, with the anterior margin not advanced in front, and the posterior slightly lobed in the middle, the sides very slightly, the posterior angles strongly rounded, the anterior ones distinct; surface shining black, every- |