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Show 294 MR. A. BOUCARD ON THE GENUS PLUSIOTIS. [Mar. 5, species, in a small collection of insects made by Mr. Rogers. It is of the most splendid brass-colour ; it was found near Rancho redondo, on the Volcano of Irazu, by an Englishman who was in the company, Mr. Rogers. This insect is now in the collection of Mr. D u Cane Godman. PLUSIOTIS CHRYSARGYREA. Pelidnota chrysargyrea, Salle, Annales de la Soc. Ent. de France, tome iv. p. 362. One specimen of this magnificent species, found in April in the Candelaria Mountains, at the altitude of 5000 feet, in the oak-tree region. It is quite perfect, and was taken alive on a roble tree (Tecoma pentaphylla, Jacq.). Being somewhat different from the types of the species, I give a description of it:- Oblongo-ovata ; capite thoraceque aureo-palliclis, margine rubro; elytris aureis, tenuiter punctatis, punctis in striis regulariter ; infra aurea, tibiis tarsisque cupreis, antennis fuscis. Length 1 inch li line. Mus. Boucard. Head, thorax, and elytra very slightly punctured, of a pale burnished gold-colour with coppery-red reflections; the anterior margin of the head and the sides of the thorax of a coppery-red colour, which distinguishes this species from P. batesi; tibiae and tarsi of the same colour, with blue claws ; abdomen and pygidium of a brilliant golden colour; antennae rufous. Its place is near P. batesi, to which it is closely allied. PLUSIOTIS L^TA, Sturm, Cat. 1843, p. 341. According to M . Auguste Salle, of Paris, who possesses the type of P. leeta, Sturm, this species must be abolished, as it was described from a bad specimen of Plusiotis psittacina, which is from Mexico. This proves that I was right when I suggested in m y former paper that the locality of Valparaiso for this species was probably wrong; as up to this date no species of Plusiotis has been found south of Columbia. PLUSIOTIS BADENI, n. so. (Plate XVI. fig. 2.) Oblongo-parallela, valde convexa, supra viridi-argentea, capite cupreo-violaceo, medio viridi crebre punctulato ; thorace subtiliter punctulato, margine cupreo-violaceo, scutello violaceo Icevi; elytris tenuiter punctatis, punctis in striis profundis regulariter dispo-sitis; infra viridi-argentea, femoribus viridibus, tibiis cupreo-violaceis, tarsis cupreo-aureis, antennis fuscis. Length 7\ lines. Head of a coppery purple colour with the centre green, thorax silvery green, with a broad margin of the same colour as the head, both slightly punctured; the scutellum is also of that same colour; elytra silvery green, slightly darker than the head and thorax, strongly punctured, the punctuation disposed in regular striae ; the |