The iollowing descriptions of new genera and species are a continuation of those of a previous paper: Empria costata. n. sp.-Female: Bodv black with the collar, tegulz, the legs beyond the knees for the most part, and the caudal margin of the abdominal segments, white; head with the postoccllar area uniformly convex, the interocellar and ocellar furrows distinct; the clypeus tridentate, the median tooth as long as the lateral angles, broadly, shallowly emarginate a t middle, the latcral angles

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... ounded, the median ridge low, not reaching the dorsal margin of the clypeus; the third segment of the antennz longer than the fourth; the sawguides slightly convex above, broadly, convexly rounded below a t apex to a blunt point above, wings hyaline. Length 6 mm. Habitat.-New Haven, Connecticut. B. H . Walden, collector This species falls near cava, from which it differs in lacking the broad, convexly rounded median ridge of the clypeus and fro111 calda in having the clypeus tridentate with the median tooth as long as the lateral angles.