OCR Text |
Show 1878.] MR. M. JACOBY ON PHYTOPHAGOUS COLEOPTERA. 995 parallel, closely punctate, with two or three obsolete costse on disk, of which the outer one is more distinctly raised, of the same colour as the thorax; a transverse band at the base narrowed towards the suture and extending to the shoulders, a transverse spot in the middle and another at a little distance from the apex of each elytron, dark fuscous; all the spots, as well as the lateral margin at its anterior part, surrounded with yellowish white. Underside pale testaceous, the tibia? darker, and the femora olive-green. Var. The middle spot on the elytra absent, as well as the apical one, which is replaced by a yellowish patch. Hab. Nicaragua, Bogota. Var. Guatemala. Collected by Mr. Salvin. 26. DIABROTICA NIGROVITTATA, sp. nov. Elongate, parallel, black. Thorax bifoveolate. Elytra yellowish white, with the suture and a submarginal longitudinal stripe on each elytron not reaching the apex, black. Length 2 | lines. Head very shining black, smooth, with a fovea above the antennse; the latter of about half the length of the body, entirely black; second and third joints short, equal. Thorax quadrate, narrowed near the base, surface deeply bifoveolate, smooth, very shining black. Scutellum black. Elytra about three times the length of the thorax, with a longitudinal depression below the shoulders and extending a little below the middle ; surface very minutely punctured and finely granulose, of a yellowish white, a longitudinal stripe from the base, extending to a little distance from the apex and narrowed at each end, black. Body and the legs shining black. One specimen from Mexico and another from Guatemala, in my collection. 27. DIABROTICA NOVEMMACULATA, sp. nov. Elongate, widened behind, flavous. Head and breast black. Elytra finely punctate, flavous, five spots near the base and four near the apex black. Length 4 lines. Head black, impunctate, with a fovea and two flat tubercles in front of the antennse ; the latter more than half the length of the body, with the third joint a little longer than the second, and the fourth the longest, of a flavous or ferruginous colour, with the middle joints stained more or less with fuscous. Thorax impunctate, with two shallow depressions on its surface; sides much deflexed and margined, parallel near the base, widened above the middle. Scutellum fuscous. Elytra but little wider at the base than the thorax, gradually widened towards the apex, closely and irregularly punctured, flavous, a triangular spot extending a little below the base at the suture and surrounding the scutellum, an elongate short stripe on each shoulder, a roundish spot between the latter and the sutural one on each elytron, as well as four spots placed |