OCR Text |
Show 1881.] COLEOPTERA OF SOCOTRA. 471 The following are descriptions of the new species :- 1. TETRAGONODERUS FLAVOVITTATUS, n. sp. Niger, nitidus; antennis pediBusque piceis, thorace nitido Icevi, elytris a?nescentiBus plagis duaBus flavis. Long. SJ lin. Very close to T. quadrum, Oliv., and of the same form and appearance. The head and thorax, however, are black (with the mandibles and the margins of the thorax slightly tinted with pitchy), very smooth, and shining. The eyes are protected posteriorly by the head partly surrounding them there. The thorax has the median channel well marked ; and in the middle of the basal margin there are some longitudinal strise. The elytra are slightly seneous, shining, with the strise well marked, the fourth and fifth stria? rather distinctly punctured in their basal half; the interstices are nearly flat; the yellow markings resemble those of T. quadrum, but consist of two patches on each elytron, the basal one occupying the fourth, fifth, and sixth interstices, the second one forming an undulating fascia commencing on the third interstice and reaching to the eighth ; that portion of it which is on the fifth interstice is more removed from the apex, and nearly joins the other patch on the fourth interstice. The legs and antennse are pale pitchy, the femora dark in their middle. 2. PACHYDEMA PUNCTICEPS, n. sp. OBlonga, convexa, nitida, pallide castanea ; capite piceo, creBre punctata; clypeo reflexo, parcepunctato; thorace luxe suBtiliter punctato, medio longitudinaliter impresso ; elytris laxe punctu-latis, lineis quatuor IceviBus. Long. 10 lin. Very robust, convex, a little flattened on the back of the elytra, subparallel at the sides. The head is rather strongly and very thickly punctured, the punctures crowded near the eyes ; the clypeus is concave above, sparingly punctured, very slightly sinuate in the middle of the front margin, the margins reflexed. Thorax castaneous, one third broader than long, not very closely punctured, the punctuation more distinct above than at the sides ; obliquely narrowed in front of the middle, subparallel behind the middle (viewed from above), with a very slight sinuosity, finely margined and fringed with long fulvous hairs; the posterior angles, viewed from above, appear little greater than right angles (slightly rounded), but when viewed laterally they are completely rounded off; the base is very slightly oblique on each side, Scutellum sparingly punctured on each side. Elytra much paler in colour than the thorax ; at the base a very little broader than the thorax, a little wider in the middle, obtusely rounded at the apex ; finely ciliated on the margins; moderately finely and not very closely punctured ; each elytron has four fine, narrow smooth lines (included between lines of close very fine punctures), the first one very slightly raised. The pygidium is very delicately and rather thickly punctured. The club of the antennse is fuscous testaceous, not very long. The tarsi are very |