OCR Text |
Show 1902.] OF AMERICAN COLEOPTERA. 177 antennae extending beyond the middle of the elytra, black, the basal joint flavous below, the lower three joints shining, the rest pubescent, third joint much shorter than the fourth; thorax twice as broad as long, the sides straight, the anterior angles oblique, the basal margin rounded and rather prominent at the middle, the basal sulcus shallow, bounded laterally by deep perpendicular grooves, the surface impunctate ; scutellum testaceous ; elytra not perceptibly punctured, the anterior portion occupied by a large black subquadrate patch which does not extend to the lateral margins, the rest of the surface pale flavous, very shining; the breast and legs black, the abdomen flavous. Hab. Cachabe, Ecuador (Rosenberg). I know only a single specimen of this very distinct species, which is in m y collection. LACTICA BICOLORATA, sp. n. (Plate XX. fig. 3.) Broadly ovate and convex, testaceous, the antennae, thorax, legs, and the sides of the breast black ; elytra minutely punctured, testaceous, the apical portion in shape of a transverse oblique band, black. Length 6 millim. Head impunctate, the frontal tubercles flattened, testaceous; antennae extending to the middle of the elytra, black, the first joint testaceous below, third and following joints elongate, rather robust; thorax nearly three times broader than long, the sides straight, the anterior angles oblique, the basal sulcus shallow, the perpendicular grooves at the sides deep, the surface impunctate, black; scutellum black; elytra widened posteriorly, minutely punctured, testaceous, a transverse band, its inner margin concave and widened at the suture, occupies about the apical fourth portion of the elytra; below testaceous, the sides of the breast and the legs black. Hab. Peru. Allied to L. batesi Baly, but with differently coloured antennae and legs, and the black elytral portion narrower, the thoracic sulcus also more shallow. LACTICA LIMBATIPENNIS, sp. n. Ovate, pale testaceous ; antennae very long ; thorax impunctate, the basal sulcus very shallow ; elytra extremely finely and closely punctured, black, the lateral and apical margins narrowly pale flavous. Var. Elytra testaceous, the basal portion more or less black only. Length 2 millim. Head impunctate, flavous; the eyes entire, frontal elevations distinctly raised, clypeus flat; antennae quite extending to the apex of the elytra, very slender, entirely flavous, the second and following two joints gradually elongated; thorax scarcely twice as broad as long, the sides feebly rounded, the anterior angles not |