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Show 176 MR. MARTIN JACOBY ON N E W SPECIES [Mar. 4, clypeus slightly raised, anterior edge of the labrum black ; eyes oblong, slightly sinuate; antennae extending to the middle of the elytra, black, the lower three joints more or less flavous below, the third joint smaller than the fourth, all the following joints elongate ; thorax twice as broad as long, the sides rounded, the anterior angles simple, not oblique, basal sulcus deep, slightly sinuate, the surface flavous, impunctate; scutellum triangular, fuscous ; elytra extremely closely and rather finely rugosely punctured, not very shining, with an acute ridge from the shoulders to the apex, accompanied by another shorter ridge below the middle; below flavous, the lower portion of the tibiae and the tarsi fuscous. Hab. Llano Grande, Guatemala. I have seen only a single example of this very distinct species, which is in m y collection. LACTICA BILINEATA, sp. n. Flavous, the antennae black; thorax transverse, impunctate, with deep basal sulcus; elytra metallic blue, microscopically punctured, each with a narrow flavous streak from the base to below the middle. Length 4 millim. Head with a few deep punctures near the eyes, flavous, the frontal elevations strongly raised ; clypeus flattened, subquadrate, but slightly raised between the eyes; labrum piceous; eyes very large, distinctly emarginate; antennae piceous, the second joint half the length of the third, the other joints wanting; thorax more than twice as broad as long, very short, the sides straight, the anterior angles oblique, the basal sulcus very deep, placed close to the base and nearly straight, the disc impunctate; scutellum broad, black; elytra elongate and parallel, metallic dark blue, with a few very fine punctures at the base, from the middle of the latter proceeds a narrow flavous stripe which extends to below the middle and is much constricted medially, its direction is towards the suture; below stained with piceous, the legs pale flavous. Hab. Peru. Easily recognizable on account of its coloration, which is probably variable in regard to the elytral flavous stripes. I possess only a single specimen of this very distinct species. b. Elytra with spots or striped. LACTICA SEMINIGRA, sp. n. (Plate XX. fig. 2.) Head and thorax flavous, the antennae, the breast, and legs black; head and thorax impunctate; elytra flavous, with a sub-quadrate large black patch from the base to below the middle. Length 6 millim. Head impunctate, shining, flavous, with a small fovea between the eyes, clypeus strongly raised in shape of a triangular ridge, |