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Show 1H/9.J PHYTOPHAGOUS COLEOPTERA. 785 the base, the space between them also obsoletely depressed ; tbe entire disk very distinctly but widely punctured, uniformly fulvous. Scutellum impunctate. Elytra wider than the thorax at the base, gradually narrowed posteriorly, with a distinct transverse depression below the base; each elytron with ten rows of deep punctures, which diminish in depth* towards the apex; they are of the same colour as the other parts, and have a black round spot exactly at the end of the basilar depression, between the margin and the suture. Underside of a little deeper tint than the upper one. The four anterior legs black; the claws, however, and the posterior ones fulvous. Posterior thighs reaching beyond the apex of the elytra; claws appendiculate ; posterior tibiae with two distinct spurs. One specimen in m y collection from Nicaragua. The glabrous elytra, shape of the palpi, as well as the organization of the hinder tibiae, which are armed with two spurs, place this insect in the genus Allochroma as defined by Clark, while the coloration will distinguish it from the other species of this genus. GALERUCINJE. Genus COSLOMERA. 23. CffiLOMERA NIGRICOLLIS, Sp. nOV. Elongate, subparallel. Flavous ; head and thorax piceous or black, finely pubescent; elytra dark purplish-red, finely punctate and pubescent. Length 6 lines. Hab. Mountain of Irazu, Costa Rica. Head deeply foveolate in the middle, obsoletely punctured, black ; clypeus flavous; antennae black, covered with yellowish hairs. Thorax deeply transversely depressed in the middle, with a few other smaller depressions near the sides and base; surface covered with minute punctures and thin yellowish hairs, piceous or black, the margins narrowly fulvous. Scutellum piceous. Elytra convex, widened from the middle to the apex, very closely and minutely punctured, covered thinly with yellowish pubescence of a reddish-purple colour. Underside flavous ; tibiae and tarsi black. Nearly allied to C. submetallica, Clark, but separated from that species by the black thorax and the fine punctuation of the elytra, as well as by the almost entirely black head. I have more than half a dozen specimens before me, all of which agree exactly with each other. Collected by Mr. Rogers. 24. CffiLOMERA GODMANI, sp. nov. Elongate, parallel. Flavous ; head and thorax with two large spots; elytra finely punctate and pubescent, fuscous; tibiae, tarsi, and antennae black. Length 6 lines. Hab. Chontales, Nicaragua. Head very minutely punctured, with an indistinct median and a |