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Show 1881.] COLEOPTERA OF SOCOTRA. 473 The fine frontal line in my species can scarcely be described channel; and there is no fovea on the vertex, 4. ZOPHOSIS ^EQUALIS, n. sp. Staturafere Z. orientalis, Deyr., at minus convexa, magis paral-lela, a?neo-nigra, parum nitida; thorace creberrime et suBti-lissime punctulato; elytris sat creBre suBtilissime punctulatis. Long. 3 lin. Oblong-ovate, not very convex; slightly tinted with aeneous. Head convex, densely and very finely punctured; labrum not very closely hut extremely delicately punctured. Thorax evenly convex, deflexed at the sides, finely margined anteriorly, twice as broad as long, arcuately narrowed anteriorly, very closely and extremely delicately punctured. Elytra as broad as the base of the thorax, nearly straight at the sides, arcuately narrowed at the apex, moderately convex; the punctuation is extremely fine, but rather more distinct than on the thorax, and decidedly less close ; on the margin, near the apex, some of the punctures are longitudinally asperate ; the epi-pleural line is completely marginal ; the epipleuron has a few short longitudinal impressed lines. The antennae are black; the second and fourth joints are nearly equal, both a trifle shorter than the third. The spurs on the tibiae are reddish. The prosternal process is elongate-ovate, moderately broad, finely margined, extremely delicately, and not very thickly punctulate. Some of the specimens have the epistoma separated from the forehead by a fine sinuous line, in the middle of which is a shallow fovea ; the epistoma is more strongly punctured; and the elytra have more asperate punctures along the whole margins. I take these to be merely varieties, as they vary somewhat among themselves. This species appears, from M . Deyrolle's monograph, to be nearly allied to Z. elongata, Deyr. (Ann. Soc. Ent. Fr. 1867, vii. p. 219) ; but that species has evidently much more asperate punctuation on the sides of the elytra, &c. 5. HISTEROMORPHUS PLICATIPENNIS, ii. sp. (Plate XLIII. fig.l.) Niger, nitidus; capite thoraceque la?vibus, elytris singulatimlineis quatuor longitudinalibus angulatis impressis, interstitiis et 4. Bene convexis angulatim flexuosis. Long. 4 lin. This species is much smaller than H. plicatus, Kz., but has almost precisely the same form. It is at once distinguished by the remarkable plicate elytra. Each elytron has four zigzag strise (besides a portion of a fifth on the side); the space between the first and second strise is only slightly convex; the three following interstices are very convex and are zigzag in the same way as the strise, impunctate; the apex of the elytra is flattened above, but scarcely reflexed. EUSYNTELIA, n. gen. Mesosternum sloping, more or less concave. Eyes subreniform, PROC. ZOOL. Soc-1881, No. XXXI. 31 |