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Show 726 MR. M. JACOBY ON THE U*' Genus H A L T I C A , Geoff. H A L T I C A LATERICOSTA, sp. nov. Metallic blue or green, subopaque ; antennae, tibiae, and tarsi black; thorax and elytra scarcely visibly punctured, the latter with a very strongly developed costa from the shoulder to nearly the apex. 2 . Elytra without lateral costa. Length 2-2| lines. Head impunctate, the frontal tubercles strongly raised ; carina very short. Antenna? nearly as long as the body, the basal joints generally tinged with metallic blue, the rest black, second joint distinctly shorter than the third, this latter shorter than the following joint. Thorax not more than one half broader than long, rather convex, the basal groove deep and slightly sinuate, not extending upwards at the sides, the space in front and behind the groove extremely finely punctured, only visible under a strong lens. Elytra a little more distinctly punctured, the sutural margin slightly raised immediately below the base to a short extent; the lateral costa very strongly raised, commencing from the shoulder, but abbreviated at a little distance from the apex, the latter slightly hollowed out. Sapporo, on sallow. This species bears a great resemblance to H. californica, Mannerh., but is distinguished by the elytral costa not curving round to the suture, and the rather opaque or but little shining and very finely punctured elytra. The female does not differ in any way hut by the absence of the costa. The latter in the male is more strongly developed than in any other species with which I am acquainted. HALTICA OBSCURA, sp. nov. Piceous ; basal joints of the antenna? and the legs more or less fulvous ; thorax distinctly, elytra more closely and strongly punctured. Length 1| line. Head impunctate, the frontal tubercles elongate, bounded behind by a transverse groove ; carina very short and indistinct; labrum obscure flavous. Antenna? rather robust, thickened at the terminal joints, the third and fourth joints not longer, but thinner than the second, the five terminal joints fuscous, the others flavous. Thorax transversely subquadrate, the sides very nearly straight, the surface impressed near the base with a shallow transverse groove which extends to the sides, the disk distinctly but not very closely punctured. Elytra a little widened towards the apices, much more strongly and closely punctured than the thorax, the interstices here and there slightly wrinkled. Legs either entirely fulvous or stained with piceous. Yuyama. This species is a little larger than H. picipes, Baly, also from Japan, and may be at once separated by the distinctly punctured thorax and elytra, which in the other species are scarcely visibly |