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Show 1885.] PHYTOPHAGOUS COLEOPTERA OF JAPAN. 741 Genus MANOBIA, Jacoby. MANOBIA LEWISI, sp. nov. Subquadrate-ovate, piceous; above fulvous ; thorax finely and remotely punctured ; elytra regularly and strongly punctate-striate, the base swollen. Length | line. Head impunctate, obliquely grooved above the insertion of the antennae ; the latter more than half the length of the body, fulvous ; the second joint as thick as the first, but one half shorter, the two following of the same length, but much thinner, the four or five terminal joints thickened. Thorax scarcely twice as broad as long, the sides straight and converging from the base to the apex, the anterior angles slightly oblique and not produced ; surface impressed with fine and remotely-placed punctures, transversely grooved near the base, the groove slightly sinuate and extending to the sides. Elytra subquadrate, the base distinctly raised, the punctured striae very distinct and extending to the apex, the interstices near the lateral margin slightly costate. Legs entirely fulvous, the first joint of the posterior tarsi as long as the two following together ; claws appendi-culate ; anterior coxal cavities open. Jchiuchi. This genus was established by myself on some small-sized Halticina from the Malayan Archipelago, and described in the • Annals of the Genoa Museum.' The present species is smaller than any of its allies, and differs in the general coloration as well as in the punctuation of the elytra, which is more distant in regard to the striae. Genus APHTHONOIDES, Jacoby. APHTHONOIDES BECCARII, Jac. (Plate XLVI. fig. 2.) The species upon which I was obliged to establish this genus has been recently described by myself in the 'Annals of the Genoa Museum :' the specimens which served for the description were obtained at Java by Signor O. Beccari. The differences between these and the specimens collected by Mr. Lewis at Jchiuchi and Nagasaki are so slight that I prefer to look upon them as variation rather than specific. These differences consist in the lighter-coloured antennae and legs in the Japanese insects, and in the rather more transversely shaped thorax ; other marks of distinction I am not able to see, and it is very probable that I am right in considering the two forms as specifically identical, the more so as there are several instances of similar identity of species in other families amongst the Coleoptera of Japan and the Malayan islands. The present genus, which has quite the appearance of a small species of Aphthona, is at once distinguished by the long and acute spine attached to the posterior femora, which is longer than the corresponding tibia, by the regularly punctate-striate elytra, and the broader prosternum. |