OCR Text |
Show 1879.] PHYTOPHAGOUS COLEOPTERA. 781 towards the sides. Scutellum broad, oblong, impunctate. Elytra convex, the humeral callus but slightly produced, surface very distinctly punctate, the puncturing arranged in irregular rows, dark violaceous blue, shining; innerside of the same colour but with a metallic green tint, particularly visible on the tibiae and tarsi. I add here the diagnosis of two well-marked species contained in my collection, but whose habitat is not known to me at present:- 15. COLASPOIDES DECEMMACULATA, sp. nov. Oblong-ovate. Ferruginous ; head closely puuctate, substrigose at the vertex; thorax less closely, moderately strongly punctate, with four transversely placed small black spots ; elytra wider than the thorax at the base, minutely granulate, closely and irregularly punctured, each elytron with five large yellow spots margined with piceous, of which two are placed transversely at the base, two at the middle, and one near the apex. Length 4 lines. 16. COLASPOIDES YARIABILIS, sp. nov. Ovate, convex. Fulvous ; lower part of head sparingly punctate, the anterior margin with two or three piceous spots; thorax obsoletely punctured, four transversely placed patches and the margins piceous; elytra closely and distinctly semipunctate-striate, each elytron with two longitudinal spots at the base, two other larger ones at the middle, transversely placed, and a large transverse patch near the apex, as well as the suture, ferruginous. Var. a. Thorax and underside black. Var. b. Thorax unspotted, elytra with black spots, the basal ones united or normal. Var. c. The patches on the elytra reduced to five or six small black spots, underside piceous, base of thighs and the tibiae fulvous. Genus ZYGOGRAMMA, Chevr. 17. ZYGOGRAMMA CHAMPIONI. Oblong-ovate. Dark aeneous, shining, antennae and tarsi fulvous ; elytra irregularly punctured, their lateral margins light flavous. Length 3 lines. Hab. Capetillo, Guatemala. Head deeply but not closely punctured; labrum, palpi, and antennse fulvous, the latter with their joints gradually thickened and reaching to the base of tbe thorax, the third joint about double as long as the second. Thorax narrowly transverse, the anterior margins but little concave behind the eyes and almost straight, sides widened and rounded before the middle, parallel thence to the base ; surface rather deeply punctured on the disk, intermixed with smaller punctures, very strongly and deeply punctate at the sides; there is also a deep irregular-shaped fovea at each side near the anterior margin. Scutellum large, impunctate. Elytra narrowed towards the apex, deeply and irregularly punctured, with the exception of a regu- |