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Show 786 MR. M. JACOBY ON N E W [Dec 16, more distinct transverse groove between tbe eyes; apex of the man-dibulse piceous ; base of the head occupied at each side by a large elongate black spot; antennse short, black, pubescent. Thorax nearly three times as broad as long, transversely impressed across tbe entire disk, minutely punctured, flavous or rufous, with a large round black patch at each side near the posterior margin, where the puncturing is a little more distinct. Scutellum flavous, pubescent. Elytra a little wider than the thorax, parallel or very little widened posteriorly, exceedingly close and minutely punctured, of a dark fuscous colour, and covered with thin whitish pubescence. Underside and the femora flavous ; knees, tibiae, and tarsi black. To be distinguished from C. maculicollis, Clark, by the larger size, the two-spotted thorax, and by the minute punctuation of the latter and of the elytra, while it differs from C. binotata, Dej., in the coloration as well as the sculpture of the elytra. Genus CHTHONEIS, Baly. 25. C H T H O N E I S JANSONI, sp. nov. Elongate, parallel. Black ; head and thorax flavous ; four apical joints of the antennae testaceous ; elytra violaceous, closely punctured, and transversely rugose. Length 3 lines. Hab. Chontales, Nicaragua. Head impunctate, deeply transversely grooved between the eyes; labrum and palpi piceous; antennae as long as the body, closely pubescent, with the exception of the first joint, second and third joints short, black, tbe last four joints testaceous or flavous. Thorax transverse, about twice as broad as long, anterior margin slightly concave in the middle, sides narrowed at the base ; surface moderately convex, impunctate, shining flavous. Scutellum black. Elytra wider at the base than the thorax, closely and distinctly punctured ; the interstices transversely wrinkled or semireticulate; entirely dark violaceous, semiopaque. Underside and legs black, covered with whitish pubescence. The colour of the head and thorax principally distinguishes this species from C. apicicornis, Baly. Collected by Mr. Janson. 26. CHTHONEIS SMARAGDIPENNIS, sp. nov. Elongate, parallel. Flavous ; antennae, tibiae, and tarsi black ; thorax transversely foveolate; elytra bright metallic green, closely rugose punctate. Length 3-3| lines. Hab. Capetillo, Guatemala. Head not longer than broad, vertex with a few minute punctures, carina and encarpse ill-defined ; antennae as long as the body in the male, shorter in the female, second and third joint very small, moniliform, fourth joint longer than the first three joints together. Thorax subquadrate, its sides widened in the middle and contracted |