OCR Text |
Show 234 MR. P. CAMERON ON [Mar. 19, metapleural keel; the lower part of the metapleurae closely punctured. The hinder tarsi are for the greater part black. CHRYSIDIDJE. STILBUM SPLENDIDUM Fab. A species common in the Indian and Australian Eegions. CHRYSIS (HEXACHRYSIS) NOVO-BRITANNICA, sp. nov. Viridis, aureo cceruleoque variegata ; fiagello antennarum nigris alis fusco-violaceis. 2 . Long. 10 mm. Scape of antennae brassy blue ; the 2nd and 3rd joints metallic bright green, the remaining joints are black; the 1st joint is sparsely covered with white hair, the 2nd and 3rd with a pale down; the 3rd joint is twice the length of the 2nd, and about one-third longer than the 4th. The vertex is deeply and closely punctured; the ocellar region is broadly blue; the top of the front has a distinct margin; its middle is roundly incised ; the sides roundly project; the central depression is smooth; the lateral projections bear some large, deep punctures; the front is covered thickly with long white hair. The lower outer orbits bear a stout keel between the centre and the eyes; the base of the mandibles punctured, but not strongly or closely. Thorax emerald-green largely mixed with blue; the pro- and metapleurae are largely brassy. The thorax, including the scutellum, is closely, deeply, and uniformly punctured; the thorax is not clearly separated above; below there are two large, deep, smooth foveae, somewhat oval in shape and separated by a narrow keel which does not reach the top ; on either side of their basal half is a large, shallower oblique depression, which is rounded behind aud transverse and oblique in front; in the middle of the central fovea are two stout curved keels. The upper half of the propleurae is largely excavated, the lower bears two large foveae. Mesopleurae rugosely punctured, except on the lower part, which is depressed, smooth, and irregularly punctured round the edges; the upper part roundly projects in the middle. Metapleurae for the greater part closely and minutely striated; the edges, except below, are deeply and largely irregularly punctured. Wings uniformly dark fuscous violaceous ; the costa, stigma, and nervures deep black. The basal two segments of the abdomen are uniformly, but not very deeply punctured ; the basal segment has a deep rounded depression in the centre above at the base ; the 3rd segment is more closely punctured, especially towards the apex; the 6 teeth are not large or acute ; the divisions are shallow and waved ; the outer teeth are smaller, there are 7 foveae on either side, the inner ones are broad; the dorsal surface is for the main part blue mixed with brassy tints ; the ventral surface is green mixed with golden ; the sides of the median segments project largely and are gradually narrowed towards the outer side. |