OCR Text |
Show 1875.] MR. A. BOUCARD ON THE GENUS PLUSIOTIS. 119 PLUSIOTIS RESPLENDENS, sp. n. (Plate XXIII. fig. 5.) P. resplendens: oblonga, valde convexa, supra aureo-metallica, capite punctatO) oculorum margine interiore aureo-rubro, clypeo antice rotundato roseo-violaceo ; thorace subtiliter punctulato ; elytris aureis, nitidis, leevibus; infra roseo-argentea, tarsis aureo viridibus, antennis fuscis. Length 1 inch. Head strongly punctured; thorax nearly twice as long as it is broad, convex, the whole surface smooth ; elytra convex, lightly striated with a burnished reddish gold margin, broader in the middle and rounded at the base. All the upper surface with the pygidium is of the most magnificent burnished pale gold, which will at once distinguish the species from any other. The underside is brassy silvery, less shining, with purplish reflections. The only difference I can perceive between the male and the female is in the former being a little narrower and in the underside, which is more golden with greenish reflections. Hab. Costa Rica. I have two specimens of this magnificent insect, which were collected near San Jose. PLUSIOTIS AURORA, sp. n. (Plate XXIII. fig. 7.) P. aurora : supra roseo-metallica, oblongo-ovata, capite punctato, thorace subtiliter punctulato, margine rubro; elytris tenuiter punctatis, punctis in striis regulariter dispositis, margine rubro; infra igneo-rosea, tarsis rubro-metallicis, antennis fuscis. Length 1 inch 2 lines. The bright rose colouring with red margin will at once distinguish this species from its congeners. The head is slightly punctured, rosaceous, with greenish reflections; the thorax is of the most magnificent metallic coppery rose-colour, as well as the elytra and the pygidium, and slightly punctured all over. In the elytra the punctuation is disposed in regular strise; they are oblong, a little broader in the middle and rounded at tbe base. The underside is of the same colour as the head, with the same reflection. Tarsi metallic red, with black claws. Hab. Veragua. I have only one specimen of this very handsome insect, which was sent to me two years ago by one of m y correspondents. Three months ago I received from the same country what I consider to be the female. It is exactly similar in shape and size; but the colour is totally different, being a kind of pale silvery green, with rose reflections. However, I am in doubt about it, as I have just received from the same country another specimen equally similar but all green. Unfortunately this insect is not in a condition to be described, having lost a great part of its original colour on the elytra and thorax. I shall wait until more specimens arrive to decide the question. PLUSIOTIS BATESI, sp. n. (Plate XXIII. fig. 6.) P. batesii: oblonga, valde convexa, supra aureo-pallida splendida, |