146 PROCEEDINGS ENTOMOLOGICAL SOCIETY funicle subequal, the first slightly longer ; joints of club fused, the apex produced into a spine-like process ; propodeum punctured, lateral folds represented only by basal foveas ; mesepimeron with a depressed area with thimble-like punctures, above this a single fovea and one below; below insertion of wings a double fovea; rest of mesopleura-almost un-sculptured; coxas metallic bluish, femora brown, rest of legs, including trochanters, honey-color; abdomen yellowish, the sides more or less dark brown. . Male. Length about 2 mm.; flagellum of antenna; over 1 mm. Sim-ilar to the female but more purplish: legs brown, abdomen dark brown; antennas elongate, dark brown, the funicle seven-jointed, the first joint two-thirds as long as the scape; apical spur on club as in female; mes-opleura; and metapleuree mostly punctured. One of each sex reared from Mordellistena ustnlata by \V. J. Phillips, Bureau of Entomology, U. S. Department of Ag riculture; the female from Lafayette, Indiana (under Web-ster No. 5181), and the male from Wilmington, Ohio (under Webster No. 6332). Type: Cat. No. 13368, U. S. National Museum. NEW SOUTH AMERICAN NEUROPTEROID INSECTS. BY NATHAN BANKS. During the past two years I have received a considerable number of these insects from Colombia, collected by Mr. A. H. Fassl in the western part of that country. Dr. Esben Petersen, of Silkeborg, Denmark, has kindly sent me dupli-cates from the Jensen-Haarup expedition to Argentina. The material in these two lots, and a few others, form the basis of the following descriptions. The altitudes of the localities in Colombia are in meters, as on the labels sent with the speci-mens. Family MYRMELEONID^. Brachynemurus argentinus, new species. Face pale yellowish, vertex pale brown, rather dark in front, not defi-nitely marked ; antenna; pale brownish, tips darker; pronotum pale yellowish, with a pale brown stripe each side, leaving a narrow median line ; thorax pale yellowish, anterior lobe with two dark spots behind, larger spot over base of each wing and on the pleura, a double dark spot on each scutellum ; abdomen pale on basal part, dark or black toward tip, all densely white-haired; legs very pale yellowish, tips of last tarsal joint black, rest unmarked, spurs longer than basal two joints together. Wings hyaline, venation yellowish, longitudinal veins interrupted with black spots and a small cloud at end of each cross-vein in the fore wings, the median vein in both pairs pale, almost unmarked, a larger spot
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