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Show 372 MR. M . J A C O B Y O N T H E [Mar. 7, PLATYXANTHA LIVINGSTONI, sp. n. Flavous, the head purplish, impunctate; thorax transversely sulcate, impunctate; elytra metallic blue, extremely minutely punctured. Mas. Antennas with the intermediate joints curved. Length 7 millim. Head impunctate, metallic purplish, frontal elevations broad, transverse ; clypeus acutely raised ; palpi swollen, flavous, as well as the labrum; antennas long and slender, obscure flavous, the second joint very short, moniliform, the third and the following joints very elongate, the fifth, sixth, and seventh curved, the terminal three joints slender and thinner; thorax twice as broad as long, the sides straight at the base, slightly rounded anteriorly, anterior angles slightly produced, posterior acute, the surface transversely sulcate, the sulcus not extending to the sides, entirely impunctate, fulvous; scutellum broad, fulvous; elytra with a slight sub-basal depression, extremely minutely punctured, metallic dark blue, their epipleuras bread and continued; beloAv and the legs flavous, Hab. Niger-Benue Expedition. This species differs in its mode of coloration from any of its African allies. I received a single specimen from Dr. Staudinger and Herr Bang-Haas. MONOLEPTA MALVERNENSIS, sp. n. Testaceous, the apical joint of the antennas dark; head and thorax finely punctured; elytra punctured like the thorax, the punctation very close; a spot on the shoulders and another near the apex piceous. Length 4 millim. Head Avith a feAv fine punctures, obscure testaceous ; the eyes very large; labrum piceous; antennas extending beloAv the middle of the elytra, testaceous, the apical joint more or less piceous, the second and third joints small, equal; thorax about one-half broader than long, the sides nearly straight, the posterior margin straight, the surface very finely and closely punctured, especially so anteriorly ; scutellum piceous; elytra more strongly punctured than the thorax, the punctation consisting of very small and larger punctures, the interstices very finely rugose, a small humeral and a larger subapical spot piceous ; below and the legs testaceous ; elytral epipleuras indistinct below the middle; anterior coxal cavities closed ; metatarsus of the posterior legs elongate. Hab. Malvern, Natal (67. Marshall). The number and position of the elytral spots, the colour of the antennas, that of the elytra and of the underside separate this species from the unicolorous variety of M. 8-maculata Jac. and M. citrinella Jac. MONOLOPTA ESTCOURTIANA, sp. n. (Plate XXI. fig. 11.) Flavous, the vertex of the head and the intermediate joints of |