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Show 1881.] NORTH-AMERICAN TINEID.E. 305 instead of greyish ochreous or " greyish brown," as stated in Mr. Stainton's Manual; but it possesses the same characteristic markings, rendered more conspicuous by the paler ground-colour, but more curtailed and divided; the two rings on the antennae appear in both species, although, curiously, they are not mentioned by Mr. Stainton either in his ' Insecta Britannica' (Tineina) or in the Manual. The dark shading, which in English specimens covers the whole upper half of the fore wings, is scarcely traceable in the single specimen now before me, which occurred in Southern Oregon at the beginning of May 1871. PLUTELLA ALBIDORSELLA, sp. nov. (Plate XXXV. fig. 5.) Capite albo; palpis albis, ad latera brunneo-fusco attinctis; antennis subannulatis, apicem versus bimaculatis; thorace albo; alis anticis albis, litura brunneo-fusca, infra biangulata, ultra medium oblique porrecta, plus quam dimidium costale obtegit, punctis nonnullis in margine apicali et maculis in spatio apicali brunneo-fuscis, ciliis albidis brunneo-fusco interruptis; posticis subcinereis. Head white; palpi white, the tuft upon the second joint tinged on the outside with brownish fuscous. Antennae white at the base, faintly annulated beyond it, with two brownish fuscous spots towards the apex, the first occupying about three joints, the second (nearest to the apex) occupying two. Thorax white. Patagia brownish fuscous at their base, white beyond. Fore wings white, with a large brownish fuscous costal blotch extending over more than half the wing, having two angles at its lower edge, the outer one of which is the most clearly defined, terminated obliquely beyond the middle. There are a few brownish fuscous dots on the dorsal margin, and some small brownish fuscous blotches on the apical portion of the wing, the whitish cilia being also interrupted by brownish-fuscous spots and streaks. Hind wings pale cinereous. Expanse 15 millim. A single 3 specimen of this very distinct species occurred in Lake county, California, June 18, 1880. PLUTELLA PORRECTELLA, Linn. (Wocke, 1624). This species occurred May 31, 1872, in Mendocino county, in August on Mount Shasta, California, and in June in Southern Oregon, but very sparingly : I met with only about six specimens in all. It was first noticed in America by Dr. Clemens, who described it under the name Plutella vigilaciella, teste Stainton (Tin. N. Amer. p. 90). PLUTELLA VANELLA, sp. nov. (Plate XXXV. fig. 6.) Capite et palpis albidis; antennis annulatis; alis anticis albidis brunneo atomosis, fascia basali triangulari obliqua et plaga media triangulari (in costa macula albida interrupta) brunneis, margine apicali brunneo, anguste adumbrato ; posticis cinereis, ciliis paulo dilutioribus. |