34 INSECUTOR INSClTlvt MENSTRUUS FIVE NEW NORTH AMERICAN PYRALID>E By HARRISON G. DYAR Pyralis cacamica, new species. Brownish straw-color, dusted with black ; the dusting heavy over inner third of wing ; inner line obsolete, faintly shown below, strongly dentate ; outer line black, diffused, excurved and finely crenulate mesially, followed by a broad clear space ; a black line along costa centrally, cut by four little pale dots ; a row of terminal black spots. Hind wing pale stramineous with terminal dots. Expanse, 24 mm. Cotypes, three specimens. No. 15525, U. S. Nat. Mus. ; San Diego, California, July, 1911 (G. H. Field). One of the cotypes is in the collection of Mr. Field. Ambesa monodon', new species. Close to A . mirahella Dyar, but the abdomen and hind wings whitish, without any yellow tint ; fore wing with the markings more contrasted, cell and costa distinctly white, the excursion of the inner line forming one long blunt tooth, not a double point. Allied also to A. walsinghami Ragonot, but the tooth of inner line much longer. Expanse, 1 8 mm. Type, female. No. I 5526, U. S. Nat. Mus. ; Stockton. Utah, July 1, 1907 (T.Spalding). Tacoma submedianella/ new species. Similar to T. feriella Hulst, but rather smaller, of a more whitish tone, due to the denser white irrorations ; instead of the quadrate white patch, a long white streak along submedian from base to above tomus, widened irregularly just beyond inner line. Expanse, I 5 mm. Cotypes, three females. No. 15524, U. S. Nat. Mus.; La Puerta, California, July, 1911 (Wright & Field). One of the cotypes is in the collection of Mr, W. S. Wright. With-out seeing a male, the generic position is uncertain. Yosemitia maculicula, new species. Dark gray ; fore wing with scattered black scales, without any of the usual mcurkings ; the dark scales lie mostly along the veins, especially in a dash along center of median vein, at the origin of veins 3-5 and the veins toward apex of costa, not forming continuous lines. Hind wing whitish, tinged with gray on costa. Expanse, 23 mm.