ADOP.EA FLAVA. 107 



brownish-fulvous. A very extreme pale aberration occasionally occurs 

 = ab. pallida, n. ab. This pale form is somewhat bone-coloured, i.e., 

 whitish tinged with yellow. It was first described and figured by Ernst 

 and Engramelle (Pap. d' 'Europe, ii., p. 285, pi. 74, figs. 95a-b), in 1780, 

 from a specimen in Gerning's collection. McArthur records an example 

 of a straw-coloured tint, and much paler towards the base, taken in the 

 Brighton district, in 1900 (Proc. Sth. Lond. Ent. Soc, 1900, p. 92), and 

 Talbot a somewhat similar bone-coloured aberration as occurring 

 occasionally at Wakefield (Porritt's List of Yorkshire Lepidoptera, 

 p. 16). The form occurs in both sexes, the $ being figured in 

 Mosley's Illustrations. Rowland-Brown has an aberration of this 

 species taken in August, 1898, at Zinal, in the Val d'Anniviers, in 

 which the whole of the fore- and hindwings on the upper- and under- 

 surface, has a silvery-white appearance (not unlike Chrusophanus ab. 

 scJnnidtii), possibly the results of some failure of pigment. Hill 

 describes (Ent. Ptec, xiii., p. 359) a curious aberration, taken at 

 Folkestone in June, 1901, the anterior wings of a silvery bone- 

 colour, the posterior wings shot with iridescent green = pallida- 

 virescens, n. ab. Fowler records (Entom., xxvi., p. 32) the capture, 

 almost every year at Ringwood, among rushes, of a form ( = ab. 

 suff'usa-virescens, n. ab.), occurring in both sexes, in which the 

 forewings, from the base to the anal angle, right round to some 

 distance into the costa, is broadly suffused with dark greenish ; the 

 hindwings of this form being quite as dark as those of Thymelicus acteon, 

 the small proportion of tawny showing up vividly, and the typical form 

 being very light in comparison. The underside is greenish. Oberthivr 

 notes (in litt.) a ? aberration of a dark brown colour from the Bois de 

 Boulogne, we suspect, from the description, a parallel form with our A. 

 lineola ab. sufusa, which might also be called ab. sitffusa, n. ab. He 

 has, however, a much more remarkable aberration, in which the 

 blackish parts of the wings and the body are of a yellowish blond, paler 

 than the normal ground colour, the discal streak of the forewings 

 being silvery-grey, the antennae red (rubro-rufus) = ab. reversa, n. ab. 

 Oberthiir further observes that the Syrian examples are markedly paler 

 than the European type form = var. syriaca, n. var., whilst Riihl notes 

 that, in many examples from Asia Minor, the underside of the hind- 

 wings and apex of forewings are bright yellow in tint. Those of the 

 Hautes- Pyrenees are rather darker than the usual form, the ground 

 colour of the hindwings being particularly suffused, the form occurring 

 as an aberration in other localities = ab. obscura, n. ab. Spain and 

 southern France produce a very bright, and rather small, form, from 

 28mm. -30mm., with very bright golden-brown ground colour, and 

 narrow, clear-cut, black marginal edge, the £ with no trace of lunule 

 at end of discoidal cell = ab. iberica, n. ab., from Canales, Moncayo, 

 Bejar, Pieclrahita, and Tragacete in Spain, and Larche in the 

 Basses-Alpes. Except for the much brighter colour, this is not 

 very unlike that of the plain district further north — Fontainebleau, 

 etc. Lemann records a large form from Villach, and we have examples 

 from Guarda, Fusio, Torre Pellice, Bourg St. Maurice, etc., in which 

 the average wing expanse is from 33mm. -36mm., the 2 with a more 

 or less marked dark discal lunule at the end of the cell = var. (et ab.) 

 major, n. ab., a more suffused dark margin and well-developed dark 



