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Show 772 MR. W. H. ASHMEAD-REPORT ON THE PARASITIC [Nov. 1 9, (14) HEXAPLASTA ATRICEPS, Ashm. Ganaspis atriceps, Ashm. Journ. Linn. Soc, Zool. vol. xxv. p. 67. This species, described from St. Vincent, belongs in reality to this genus. It was placed in the genus Ganaspis on account of having a closed marginal cell, since Forster described Hexaplasta with an open marginal cell; but the open or closed marginal cell in this group is of little generic importance and we must depend upon other characters for generic subdivision. These characters I hope to clearly define in a publication upon which I am at present engaged, and merely take this opportunity to place the above species in its proper genus. (15) HEXAPLASTA RUFOLATERALIS, sp. n. 2 . Length 1 to 1*1 m m . Polished black, the sides of thorax, metanotum, and abdomen toward base beneath brown or brownish piceous ; metapleura red ; antenuae, except last 5 joints which are fuscous or black, and legs brownish yellow. Antennae 13-jointed; joints 2-5 of funicle obconic, very little longer than thick ; club-joints, except the last, not, or only a little, longer than thick, the first the smallest, the following gradually increasing in size, the last ovate and the largest joint. Scutellum closely reticulately punctate; the cup large, ovate, with a small fovea posteriorly and 4 punctures anteriorly. Metapleura red or reddish, bounded by a carina behind. Wings hyaline, ciliate, the veins brown, the marginal cell closed, the second abscissa of radius not quite one-half longer than the first, the latter slightly curved. Abdomen with the woolly girdle at base entire, not interrupted above. d. Length 1 m m . Antennae 15-jointed, brown, the three or four basal joints yellowish; the first joint of the flagellum is one-third longer than the second, the third and following joints hardly longer than the second and nearly three times as long as thick; otherwise as in female. Chantilly, Balthazar (windward side), Mount Gay Estate, and St. George's (leeward side). Described from nine female and five male specimens. Comes nearest to H. instabilis and might easily be confused with that species. The difference in the cup of the scutellum will, however, readily distinguish it. (16) HEXAPLASTA BRUNNEICLAVATA, sp. n. 2 • Length 1*1 m m . Polished black ; sides of thorax, metathorax, and abdomen, except the dorsum, brownish piceous ; antennae, except the club which is brown, and legs yellow or brownish yellow. Antennae 13-jointed, rather slender, nearly as long as the body; joints 2-5 of funicle cylindric, about 3 times as long as thick; club-joints 2 | times as long as thick. Scutellum finely rugose, the |