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Show 1889.] NEW SPECIES O F EROTYLIDJE. 619 bisinuate, the sides narrowed to the front, neatly and distinctly thickened and a little rounded-in to the front angles, which are acute ; the front margin scarcely emarginate, nearly straight. The elytra are strongly convex, evenly ovate, very narrowly margined, with a slight fossa near the middle of their margin, in which are two or three obsolete traces of punctures, indicating the marginal stria. Underside smooth, the legs, including the coxse, chestnut-red ; the prosternum very wide, in front forming a small, not prominent point, from which to the base it forms an equilateral triangle between the coxae ; mesosternum short and transverse, but quite distinct; all these with the rest of the body, except the abdomen and the epipleurse, are nearly black iu the New-Guinea specimen, but in the one from Mysol they are only a little darker than the legs and abdomen ; this is, however, obviously due to the less matured condition of this specimen. This is an aberrant species, if it is really an Aulacochilus; it is, however, best so placed till the acquisition of more specimens enables dissections to be made. For the specimen from New Guinea I am indebted to Dr. Sharp. 13. iEGITHUS ARMITAGEI, Sp. nOV. Oblongo-ovatus, valde convexus, niger, brunneo-picescens, nitidus; elytris flavis, sutura tenuiter et tertia parte apicali nigris, gemel-lato- striatis. Long. 7-10 millim. Hab. Amazons, Ega. This is a very distinct species of A^lgithus, its nearest ally perhaps being A. dichrous, Crotch ; it is, however, less hemispherical and less convex than that species; it is also somewhat allied to A. discoideus, Gorham, a species found in Costa Rica. Head and thorax pitchy black with black margins ; antennse rufous as far as the fifth joint. Scutellum pitchy black. Elytra quite smooth, excepting a sutural and three pairs of discoidal strise, formed of minute points very faintly impressed. The sutural stria vanishes before the middle, and the discoidal strise on entering the black apical third. Epipleura coloured with the upper surface, limb narrowly black. Underside and legs pitchy. Two specimens in the collection of E. Armitage, Esq., R.A. 14. .(EGITHUS BARTLETTI, sp. nov. (Plate LXI. figs. 9, 9 a.) Fere hemisphcericus, niger, nitidus, subleevis; elytris punctis dispersis, et in seriebus subgeminatis sat distinctis impressis, maculis tribus magnis luteis, duabus basalibus, una transversa subapicali. Long. 10 millim. Hab. East Peru (Bartlett). Very convex, but rather more oblong than hemispherical, shining black and smooth, excepting the elytra, which have each three double series of small but distinct punctures, which are, however, irregular and becoming confused here and there with other dispersed punctures of the same size. The basal luteous spots are of an irregular oblong shape, the external one is continued on the epipleura. The |