OCR Text |
Show 412 MR. MARTIN JACOBY ON NEW SPECIES [Nov. 28, another one below the middle, and a short oblique stripe neai the apex flavous. Var. a. The elytral transverse band and the spots absent. Var. b. Elytra as in the type, but the spots absent. Var. c. The transverse band indicated by a sutural and lateral spot; the other spots wanting. Var. d. Like var. c, but the apical stripe as well as the spots wanting. Length 7 millim. Head entirely impunctate, with the exception of one or two punctures near the eyes, the frontal elevations broadly transverse; clypeus flavous, with an acutely raised central ridge ; antennae dark fulvous, extending slightly below the middle of the elytra, the third and fourth joints equal; thorax strongly transverse, the lateral margins rounded, the anterior angles thickened but not dentiform, the sides with a longitudinal groove, flattened, the surface impunctate, fulvous or flavous, posterior margin nearly straight ; scutellum black; elytra impunctate, but the paler markings with minute fuscous spots, the ground-colour metallic greenish cupreous, the lateral margins, elytral epipleurte, a narrow transverse band at the middle, a small spot near the scutellum, another below the middle near the suture, and a short oblique streak near the apex at the sides flavous; under side piceous ; the anterior legs more or less pale, the metatarsus of the posterior legs as long as the following two joints; claws rather strongly swollen. Hab. Peru, Prov. Huallaga ; also Bolivia. The type of this species, from which I have drawn the above description, is not difficult to distinguish from others, on account of the elytral markings, and is principally separated by the sub-apical short flavous streak which is connected with the similarly coloured lateral stripe. Some of the varieties, however, are without this mark, and consequently resemble several other similarly coloured species; there is, however, nearly always the indication of the transverse band in shape of a small flavous sutural spot at the middle and a corresponding one opposite at the margins; the thorax has the sides well defined by a deep longitudinal groove, and the claw-joint is more strongly swollen than in many other species of the genus. Of var. d two specimens are before me. In these the elytral spots and band are absent, but, as usual, the sutural remnant of the band is present, and instead of the subapical short streak there is a widening of the flavous lateral margin at the corresponding place, thus indicating the typical mark. Oedionychis dipus 111. is of exactly similar coloration, but is a true Oedionychis with a short posterior metatarsus. A sp h .e r a e l e g a n t u l a , sp. n. (Plate XIV. fig. 6.) Black; clypeus and the thorax flavous, the latter impunctate ; elytra bright metallic blue, impunctate; a narrow transverse band |