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Show 180 MR. MARTIN JACOBY ON NEW SPECIES [Mar. 4, slightly emarginate, frontal tubercles small and obsolete, labrum piceous; antennae extending to the apex of the elytra, black, the basal two joints flavous, stained with piceous above, third and fourth joints equal; thorax transverse, slightly narrowed anteriorly, the sides nearly straight, the anterior angles strongly oblique, the surface impunctate, the basal sulcus deep and sinuate ; elytra slightly widened towards the middle, impunctate ; below and the femora flavous, the latter with a short black streak above near the apex, the tibiae and tarsi entirely black. Hab. Pichinde, Colombia. I cannot identify this species, of which three specimens are before me, with any other described Lactica on account of the long antennae, the entirely impunctate upper surface, and the markings of the femora, which are the same in all the specimens. There have been a great many species described of almost similar coloration, of which L. citrina Harold is perhaps the most closely allied, but this species has a fine but distinct punctuation and is without the femoral stripe. LACTICA SEMIFULVA, sp. n. Rufous or flavous, the head and thorax black, shining and impunctate ; elytra not perceptibly punctured ; antennae and legs flavous. Length 4 millim. Head impunctate, black, shining, the frontal tubercles obsolete, the carina comparatively very broad and convex, clypeus deflexed, labrum pale piceous ; antennae long and slender, entirely fulvous, the third joint slightly shorter than the fourth, this and the following joints nearly equal; thorax transverse, about one-half broader than long, the sides with a narrow margin, straight, the anterior angles oblique, posterior acute ; the disc impunctate, black, shining, the basal sulcus deep, bounded at the sides by another deep longitudinal groove ; scutellum fulvous ; elytra with a shallow depression below the base, of a bright rufous or pale fulvous colour, entirely impunctate, shining; the underside and the legs flavous. Hab. Espirito Santo, Brazil. Of this very distinct species 1 possess three specimens, two of which have the elytra of much paler colour than the other. L. dichroa Har. seems to be a nearly allied species, but has the antennae, the underside, and the legs black ; this and v. Harold's species are the only members of the genus with which I am acquainted having a black head and thorax and fulvous elytra. LACTICA FLAVILABRIS, sp. n. Flavous, the head black; thorax short, strongly transverse, impunctate; elytra elongate, parallel and strongly convex, rufous, impunctate. Length 6 millim. Head black and shining, the eyes extremely large, the inter- |