Vol 46, pp. 45-54 March 24, 1933 PROCEEDINGS OF THE BIOLOGICAL SOCIETY OF WAShjiJ ^ ^"^"^ NEW AMERICAN VELIIDAE (HEMIP BY C. J. DRAKE and H. M. HARRIS, Arms, Iowa. The present paper is based upon material belonging to the U. S. National Museum, the Carnegie Museum (Pittsburgh), and the private collection of the writers. It contains descrip-tions of six species of Rhagovelia, six species and a variety of Velia, and three species of Microvelia. The place of deposition of the types is indicated after the description of each species. Velia capillata, n. sp. Brown to dark brown, the pronotum darker, sometimes blackish; rather densely clothed with long, erect, fine, brownish hairs. Head brown, hairy, with the usual impressed lines and a large fovea on each side above. An-tennae long, slender, rather thickly clothed with both long and short hairs; proportions, 35 : 20 : 42 : 45. Rostrum reaching almost to middle coxae. Pronotum coarsely and deeply pitted, sometimes with an indistinct median carina, the sides constricted before the middle, the base rounded behind, the humeri quite prominent. Hemelytra infuscate, the veins prominent and paler, an irregular longitudinal patch at the base and a rounded spot on each side of membrane near apex whitish. Body beneath brown. Legs fuscous brown, tending to be lighter toward base, rather long, very hairy; the tarsi of intermediate legs with the basal segment short, and the apical about as long as the other two conjoined. Mate.— The last segment of venter subequal in length to preceding one, its apical margin deeply excavated. Clasper long, strongly bowed, its apical portion flattened and expanded. Pronotum not as broadly rounded behind as in female. Length, 4.2 mm.; width, 1.73 mm. Holotype, macropterous male; allotype, macropterous female, Chapada, Brazil; Carnegie Museum. Paratypes, several males and females taken with types, in collection of the authors and Carnegie Museum. Velia capillata, var. cognata, n. var. Form, color, and clothing similar to typical variety from which it 7— Pboc. Biol. Soc. Wash., Vol. 46, 1933. (45)