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Show 562 MR. M . J A C O B Y O N T H E [May 18, eye, followed by the usual oblique groove, the latter rather deep; clypeus impunctate, deflexed; antennas extending to about the middle of the elytra, black, the lower four joints fulvous below, terminal joints not thickened, rather elongate ; thorax transverse, rather convex, the sides slightly rounded, the surface very obsoletely and finely puuctured, the punctures of somewhat elongate shape but irregularly distributed, of a somewhat wrinkled appearance (in some specimens almost obsolete), the base with a row of more distinct punctures at the sides ; elytra of subquadrate shape, black, shining like the rest of the upper parts, tbe punctures round and regular, the interstices impunctate, slightly costate at the sides; underside and legs nearly black; the metasternum smooth; the abdomen distinctly punctured ; the extreme base of the tibias and the tarsi more or less fulvous. Hab. Mashonaland (67. Marshall). Collection British Museum and m y own. Of still smaller size than C. gahanl and of subquadrate shape and nearly entirely black colour ; the punctuation of the thorax is very variable, assuming in some specimens, probably of female sex, a longitudinally strigose appearance, while in others there are but few punctures visible. The species will, however, not be difficult to distinguish on account of its colour and that of the antennae and legs. . CH^ETOCNEMA SEMIREGULATA, n. sp. Oblong, dark greenish asneous, the lower joints of the antennas (the basal joint excepted) and the tarsi flavous ; head and thorax very closely and rather finely punctured ; elytra more strongly punctate-striate, the subsutural rows irregularly so. Length 1 line. Head very broad, without frontal elevations, the upper portion very finely and closely punctured and extremely minutely granulate, the lateral grooves very obsolete, the clypeus separated from the face by a transverse groove, more remotely and strongly punctured, the space in front of the eyes also rather strongly and very closely punctate ; antennae comparatively short, black, the second and the following two joints flavous, the terminal five joints thickened, slightly longer than broad ; thorax strongly transverse, of equal width, the sides rather rounded, the surface rather convex, very closely and finely punctured, especially so at the sides, the interstices extremely finely granulate when seen under a strong lens, the basal margin not accompanied by an impressed line but by a row of stronger punctures ; a narrow nearly smooth space is visible in front of the scutellum, the latter very small, transverse; elytra subcylindrical, pointed posteriorly, with rowrs of rather strong punctures, not always regularly placed, those near the suture forming two very closely approached irregular rows, the interstices impunctate and shining, slightly costate at the sides and apex; femora and tibiae more or less dark aeneous, the latter more or less obscure fulvous ; tarsi robust, flavous. |