In Acopa carina Harvey, from Texas, the accessory cell on the primaries is smaller than in a new species which I have received from Prof. Snow from Southern Kansas. In this genus the body is linear and slight,tibiæ unarmed, ocelli small, male antennæ brush-like with distinct joints,thorax with a tuft behind, abdomen untufted, linear. Fore wings 12-veined with accessory cell, from the outer apex of which spring veins 7 and 8; 9 out of 8, a long furcation to costa. Hind wings 7-veined; median vein 3-branched; 8 out of 7 not far from the base. Primaries with oblique outer margin and produced apices. Front with a clypeal plate. Labial palpi narrow, linear, improminent; legs slender, tibiæ unarmed.