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Show 304 LORD WALSINGHAM ON L e * * of which the first forms the outer edge of the second fascia.and five marginal, the last being in the cilia at the anal angle , these are also conspicuous on the underside. „«1P brownish Hind wings scarcely emarginate below the apex, ver' pale brownsh fuscous, slightly shaded about the margins and at the base ot the PaThCelithorax is of the same colour as the darkest portions of the wings; the abdomen faintly banded, the anal tufts lightly ochreous. Expanse 20 millim. Seventeen specimens, April 16th, 1872, on Currant Creek, an affluent of John Day's River, North Oregon. Genus PLTJTELLA (Schranck). P L U T E L L A CRUCIFERARUM, Zell. (Wocke, 1626). This species has been frequently recorded under various names as occurring in North America (see Chambers, Index to described Tineina of United States and Canada, Bull. U.S. Geol. and Geog. Survey, 1878, p 161), as it does also in Europe, Asia, and Africa. I met with it on Mount Shasta, California, in August 1871 ; but I have no recollection of having found it in the same abundance there as in Europe. My list includes nine specimens. It is probably the insect referred to by the Editors of the American Naturalist (vol. v. p. 194) under the name of Tinea spilotella, which should be added to Mr. Chambers's list of synonyms. PLUTELLA INTERRUPTA, sp. nov. (Plate XXXV. fig. 4.) Capite et thorace albidis ; antennis albidis, griseo-fusco annulatis bicinctis ; pa/pis tenuibus albidis ; alis anticis subochraceo-dilute griseo-fuscis, ultra medium sublituratis et in toto margine punctatis, macula parva costali ultra medium griseo-fusca, vitta elongata in plica sub medio cellula? late interrupta fusca; posticis cum ciliis griseis. Head and thorax white; palpi rather slender, white, the second joint touched with greyish fuscous above. Antennae white, annulated with greyish fuscous, and having two rather wide but inconspicuous rings of greyish fuscous, the first about their middle, the second beyond it. - Fore wings rather yellowish white, very slightly shaded or mottled with pale greyish fuscous, especially beyond the middle ; a pale greyish fuscous spot on the costa, at about one third from the apex ; the costal, apical, and dorsal margins dotted with greyish fuscous; on the fold is a dark fuscous streak, commencing below the costa near the base, widely interrupted below the middle of the cell, the first portion slightly curved and more than twice as long as the second : hind wings and their cilia grey. Underside greyish fuscous. Expanse 19 millim. This is evidently the North-American representative of the European Plutella annulatella (Curtis), which it greatly resembles. It differs in the ground-colour of the fore wings being yellowish white |