PROCEEDINGS OF THE Entomological Society of Washington VOL. 25 MAY-JUNE, 1923 No. 5-6 NEW OLETHREUTIDAE FROM EASTERN UNITED STATES (LEPIDOPTERA). By Carl Heinrich, U. S. Bureau of Entomology. The following descriptions are offered in advance of a general revision ot the subtamiHes Olethreutinae and Laspeyresiinae now in preparation. It is desirable to have names for use before the larger work can appear; hence the wholly verbal descriptions. Figures of genitalia, male and female, will be given in the revision. Subfamily Olethreutinae. Bactra maiorina, new species. Palpus and head whitish ochreous. Thorax ochreous, paler and more whitish ochreoLis cephelad. Fore wing ochreous with a central, longitudinal, tuscous shade from base to apex; at end of cell a very small dot; costa faintly strigulated with fuscous; cilia pale ochreous dusted with fuscous, especially toward apex. Hind wing ochreous tuscous; cilia whitish ochreous with a dark basal band. Alar expanse. — 13-20 mm. Type.—Q2.t. no. 26280 U. S. N. M. Paratypes'. — In National Collection, American Museum and collection Barnes. Type locality. — Arlington, Virginia. Food plant. — Scirpns fliiviatilis. Described from male type, two male and one female para-types from the type locality reared July 1, 1920, from Scirpus fluviatilis; 1 male and 1 female paratypes from Vineyarci, Utah (Tom Spalding, "VI-2-12" and "IX-1-12"), and one female paratype from Linton, Indiana (J. J. Davis, "VII-, 13-1916, from Grass"). It can be easily recognized by the prominent fuscous streak through the middle of the wing. The male genitalia are of the veriitana type but the heavy spines on cucuUus are crowded toward the lower margin and not in two lines as in Zeller's species. Bactra priapeia, new species. Similar to maiorina but darker and with different genitalia. The central longitudinal streak on fore wing is also present in this species but is less strongly contrasted against the ground color, the entire wing being more or less suffused
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