OCR Text |
Show 4/6 MR. C. O. WATERHOUSE ON THE [Apr. 5, A short, broad species. Head closely and rugosely punctured, scarcely impressed on each side above, slightly broader posteriorly than in front, nearly straight-sided; the median carina is fine, and is continued back to the vertex: the ocular carina is very short. Thorax very closely and rugosely punctured, at the anterior angles very slightly broader than the head, much broader behind the middle, narrowed again at the base, gently reflexed at the sides, with two strong dorsal costse; the anterior angles, although not very acute, are decidedly prominent; the sides are strongly angular considerably behind the middle; the base is divided into three equal parts by the points of juncture with the dorsal carinas. Elytra one quarter longer than broad, depressed, rather suddenly deflexed at the apex ; each elytron with three well-marked costse, the second distinctly abbreviated at the base and apex; the first interstice with two lines, the second and third with three lines of strong deep punctures. Legs obscure pitchy. 10. OPATRUM COSTIFERUM, n. sp. (Plate XLIII. fig 2.) Breviter oBlongum, convexum, latum, nigro-piceum, supra saBuloso-lutosum; elytris costatis, costis tuBerculatis. Long. 6 lin., lat. 4 lin. Head covered with small, round, shining, black granules placed moderately close together. The clypeus has its front margin straight on each side of the deep triangular incision ; at the sides it is suddenly obliquely turned back, so as to form an obtuse angle with the antennal orbits. The third joint of the antennae is at least as long as the three following joints together ; the fourth joint is a trifle longer than broad, the fifth to eighth are nearly globular; the ninth and tenth are distinctly transverse, and a little broader than the eighth; the eleventh is nearly globular, scarcely narrower than the tenth. The thorax is twice as broad as its length in the middle, deeply emarginate in front for the reception of the head, convex on the disk, impressed at the sides, arcuately narrowed in front of the middle; the anterior angles are blunted right angles; the sides behind the middle are parallel; the posterior angles are blunt, and a little greater than right angles ; the base is broadly lobed in the middle, the lobe itself straight next the scutellum ; all the disk rather closely covered with depressed conical black tubercles ; there is a fine median impressed line. Elytra at the base scarcely broader than the thorax, a trifle broader at the middle, scarcely longer than broad, very convex, descending at the apex, very gently arcuate at the sides; each elytron has seven slightly raised broad tectiform costse, a line of small round obtuse tubercles being ranged along the summit of each costa. Tarsi short and thick. This species has somewhat the appearance of Saragus la?vicollis, Oliv., and at first sight would scarcely be taken for an Opatrum. APITHESIS, n. gen. Mentum transversely trapeziform, narrowest at the base: labial palpi short and thick, the apical joint large, thick at the base, narrowed |