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Show 1905.] OF PHYTOPHAGOUS COLEOPTERA. 451 impunctate, flavous ; scutellum black; elytra shining, black or nearly so, impunctate, the extreme lateral margins and epipleurse and the apex more broadly flavous ; femora flavous ; the under side, tibiae and tarsi piceous, the apex of the posterior femora black. Hab. Espirito Santo, Brazil. A rather small species, not difficult to distinguish, of which I possess two specimens. O ed io n y ch is sem ifo v e o l a t a , sp. n. (Plate XV. fig. 5.) Black, the thorax and abdomen flavous ; elytra dark purplish, the disc with longitudinal rows of elongate fovea?, the sides narrowly and the apex broadly flavous. Length 9 millim. Head black, impunctate, frontal elevations rather broad; carina acute, black, clypeus flavous at the sides; antenna? black, the basal joint flavous below, third joint shorter than the fourth ; thorax more than twice as broad as long, narrowed anteriorly, the sides rounded, with a broad, flattened margin, the anterior angles produced into a tooth, the surface convex, impunctate; scutellum black ; elytra dark metallic purplish, margined at the sides and apex with flavous, at the first named place narrowly so, at the latter suddenly widened into a broad band the anterior edge of which is quite straight, the disc impressed with distant, elongate and partly round greenish fovese, which are placed in rows, interstices entirely impunctate; under side and legs black, abdomen flavous. Hab. Venezuela. Closely allied to 0. porosa Baly, but the elytra of different sculpture, the fovea; isolated and placed in rows, and the abdomen flavous. A single specimen is contained in my collection. In Duvivier's Catalogue 0. porosa Baly is given as a synonym of 0. variolosa Harold, but this requires confirmation, since the size of Baly's species is from 3g-4 millim., while Harold gives 11 millim as the length ; Duvivier, moreover, has only given a short diagnosis, which in these closely allied and numerous groups of insects is quite useless. Oe d io n y ch is pretio sa Baly. The locality of this species as given by the author is Brazil, not Siam as stated in Duvivier's Catalogue, 1885. O e d io n y ch is cub a n a Harold. Coleopter. Hefte, xiii. p. 90 : Cuba. This species is not mentioned in any of the Catalogues. O e d io n y ch is f l a v om a r g in a t a , sp. n. (Plate XV. fig. 9.) Black, thorax impunctate, the sides broadly flavous ; elytra convex, finely and closely punctured, black, the lateral margins narrowly and the apex more broadly flavous. Length 6-7 millim. |