OCR Text |
Show 1880.] MR. M. JACOBY ON PHYTOPHAGOUS COLEOPTERA. 591 Genus MEGALOPUS, Fabr. 9. M E G A L O P U S ARMATUS, Lacord. I am somewhat doubtful whether I am to refer the specimens col-ected by Mr. Buckley to this species, inasmuch as they differ in coloration from any specimens of M. armatus I have seen ; but as this difference is the only one, and the insect itself is rather variable in that respect, I consider it a local variety, which differs from the type as follows : there are three transverse fulvous bands at the elytra in both male and female, which is the case also in M. armatus, but in the female only ; the apex of the elytra in the Ecuador insects is also fulvous, with the exception of a black spot in the centre ; in M. armatus the apex is always black. There are eight specimens before me from Ecuador which show no variation in colour; and it is therefore not improbable that they belong to another species according to our present ideas. 10. ISCHIOPACHYS BICOLOR, Lacord. 11. ISCHIOPACHYS FULGIDIPENNIS, Lacord. 12. POROPLEURA CCELESTINA, Lacord. 13. CHALCOPLACIS RUFIVENTRIS, Erichs. The antennse in the only specimen before me are entirely rufous, thus differing from the type; the elytra are dark violaceous. Genus METAXYONYCHA, Marsh. 14. METAXYONYCHA LEFEVREI. Colaspis lefevrei, Baly. On account of the distinct concavity at the end of the intermediate tibias, I think this species ought to be classed in the genus Metaxyonycha. The specimens from Ecuador do not vary from Baly's type before me. 15. PRIONODERA ELEGANS, Jacoby. Genus COLASPIS, Fabr. 16. COLASPIS B U C K L E Y I , sp. nov. Ovate. Dark metallic green below, antennse and legs dark brown; above dark purplish, the margins of the thorax and that of the elytra narrowly metallic green. Length 4\ lines. Head deeply but not closely punctured, with a central deep groove ; anterior margin of the epistome metallic green, labrum black ; palpi slender, testaceous ; antennse fulvous, joints 5-8 piceous, the apical ones testaceous. Thorax about twice as broad as long, sides distinctly bidentate ; surface punctured like the head, impressed at each side with a rather deep fovea, the ground of all the punctures metallic green, this colour specially noticeable near the margins on |