TRIFURCULA PALLIDELLA. 357 



"Ent. Mo. Mag.," xvi., p. 186 (1880) ; Sorhgn., "Die Kleinschmett. Brandbg.," 

 p. 343 (1886) ; Griffith, " Ent. Mo. Mag.," xxii., p. 65 (1886) ; Bankes, "Ent. Mo. 

 Mag.," xxv., p. 445 (1889) ; Meyr., " Handbook," etc., p. 727 (1895). Pallidulella, 

 H.-Sch., "Sys.Bearb.,"fig. 860 (1853). 



Original description. — Pallidella, F.-B., nov. sp. (figs. 51-52). — 

 Alis anfcerioribus exalbidis, obscurius grosse squamatis ; posterioribus 

 cinerascentibus, exalbido-ciliatis. Grosser als die folgende (T. immun- 

 della), wie eine Gem. spartifoliella. Der Korper bleicb gelblich gliinzend, 

 Hinterleib grau, am Eaude und Baucbe weisslichgelb beschuppfc. 

 Schopf auf dem Scbeitel blassrosfcgelb ; Fuhler hellgrau, bleichgelblicb 

 beschuppt und schimmernd. Fliigel seidenglanzend ; die vordern auf 

 beiden Flachen sebr bleicbgelblichweiss, auf der Oberseite mit groben, 

 sehr blassocbergelben, gegen die Spitze reichlicheren Schuppen. Die 

 Fliigelspitze ist auf den Franzen von einem solchen Scbuppenringe 

 eingefasst. Hinterfliigel durcbsichtiger, sehr hellgrau mifc gelblichen 

 Franzen (Zeller, Linnaea Efttomologica, iii., p. 332). 



Imago. — Head rough, rusty -yellowish. Anterior wings 8 mm. in 

 expanse ; unicolorous yellowish-white in colour, irrorated with large 

 ochreous scales. Posterior wings pale grey, with yellowish fringes. 



Sexual dimorphism. — The females are considerably darker, both fore- 

 and hind-wings, than the males (Bankes). 



Life-history. — Quite unknown, although the larva probably feeds 

 under the bark of the twigs of Genista tinctoria, and allied plants. 



Food-plants. — ? Genista tinctoria (Stainton), .■Genista sagittalis 

 (Zeller), ? Genista germanica (Wocke), ? Cgtisus (Krause). 



Time of appearance. — The species appears to be double-brooded, 

 imagines appearing May- June and August- September, although 

 Krause captured, besides the two regular broods, a specimen on July 

 3rd, 1868, at Altenburg, whilst Fletcher took one on July 3rd, 1890, 

 near Brighton, and Bankes two, worn, on July 3rd, 1893, at Purbeck. 

 Mann captured specimens on May 19th, 1846, at Pisa, in marshes, 

 among low bushes and grass, in May, 1851, at Brussa, in Asia Minor, 

 in May, 1853, at Fiume, in a little ash wood behind the Pulverthurm, 

 in May, 1854, in a pasture-field, at Oberfeld, in Carniola, and in May, 

 1858, he took two specimens in Sicily. Milliere notes it as occurring 

 at Cannes in April. Krause notes the species at Altenburg, in two 

 generations, from the commencement to the middle of June, and the 

 commencement of September ; it occurs here in a very confined locality, 

 the upper cliffs of a disused gravel-pit. He notes that Zeller and 

 Bossier consider the species to be confined to moist localities, but this 

 is dry, and covered with heather, scabious, etc., among which the moths 

 fly as soon as the sun goes down. Hodgkinson notes it as flying at 

 Dutton, at the end of August, from 7.a.m.-9a.m. Fletcher obtained 

 it freely near Brighton, at end of August and commencement of 

 September, in 1890, among Genista tinctoria. Bankes took it freely 

 in a rough pasture, from September 5th-19th, 1889, at Purbeck, the 

 males flying, on calm evenings, for half-an-hour at sunset, the females 

 seated on the herbage, the males sometimes assembling to them when 

 newly emerged ; also August 28th-September 19th, 1890, September 

 8th-October 3rd, -1891, August 17th-September 10th, 1892, August 

 7th-29th, 1893, August 28th- September 1st, 1894, August 11th, 1898. 

 Dale records it from Glanvilles Wootton on September 2nd, 1888. 



Localities. — Dorset: Purbeck (Bankes), Glanvilles Wootton (Dale). 

 Hereford; Woolhope (Wood), Herts; Sandridge, nr. St. Alban's (Griffith), 



