AGRIAL>ES CORIDON. 19 



lunules capped with grey chevrons on the forewing, and nine capped 

 with orange and grey chevrons on the hindwing ; rarely in the S > 

 but usually in the ? , the lunules on the forewings are also capped 

 with orange ; the orange colour in the ? is usually deeper-tinted 

 than in the J , and may extend from a pale yellow {flavescens) to 

 a bright vermilion -red (rafescens), the grey chevrons are more marked 

 in the forewing, the orange in the hindwing, in both sexes. In certain 

 of the albescent {pallida) form, tending to obsolescence in the spotting, 

 the orange chevrons, extended somewhat wedge-shaped and pointing 

 towards the centre, stand out clearly and separately round the margin 

 of the hindwings against the white ground colour like little jewels 

 in a coronet (coronetta, n. ab.), whilst, in others, chiefly also of the 

 albescent form, though also rarely in the paler $ forms, the margin is 

 practically obsolete, except for faint grey traces of the chevrons, and this 

 is more marked, as a rule, on the fore- than on the hindwings (obsolescent, 

 n. ab.). When the margins are practically absent, and the specimen 

 is also of the extreme obsolete form, we get the ab. obsoletissima as already 

 noticed. The colour of the basal scales on the undersides may be blue 

 (typical), green (cldorescens), or bronzy (aurescens) ; the most strongly 

 developed examples in this direction belong to the Rivieran races, in 

 some of which the blue ( $ ) and golden ( ? ) scales spread over a 

 considerable area, especially at the base of the hindwing. Hodgson 

 possesses three examples (£ and ?) with a trace of metallic blue 

 scales in two or three of the marginal spots towards the anal angle 

 of the hindwings (argenteoguttata, n. ab.), thus representing the well- 

 known "silver studs" of Plebeius an/as (aet/on); Webb observes (Ent. , 

 Rec, i., p. 282) that he also possesses A. coridon with the marginal 

 spots of the hindwings beneath ocellated with bright scales, and so 

 resembling Plebeius arr/us. The following appear to be the described 

 forms : — 



Male Aberrations. 



a. ab. suffusa, Tutt, "Brit. Butts.," p. 167 (1896); Lamb., "Pap. Belg.," i., 

 p. 240 (1902); Bartel, " Ent. Zeits. Guben," xviii., p. 115 (1904); Griebel, " Lep. 

 Faun. Bay. Rheinpfalz," i., p. 16 (1909); Seitz, " Gross-Schmett.," i., p. 315 (1909); 

 Rebel, " Berge's Schmett.," 9th ed., p. 72 (1909). Conjdon ab., Hoclgs., " Proc. 

 Sth. Lond. Ent. Soc," p. 87 (1906).— cf. Ground colour of a dark suffused 

 hue (Tutt). 



This is a form in which the ground colour itself is darkened by 

 general suffusion producing a brownish, drab or grey tint, sometimes 

 with a definite trace of the ordinary ground colour, and sometimes 

 entirely devoid thereof, according to the degree of suffusion. The 

 margin is normal, and the ground colour dark quite independently of 

 any spread of the dark margin over the wing. The type of stiff usa 

 was taken at Canterbury in August, 1892 ; it is of a drab or brownish 

 colour to the naked eye ; under a lens the brownish ground colour is 

 seen to be due to a covering of small blackish scales, the blue being- 

 restricted to the basal portions of the costa and inner margin of the 

 forewing, and the inner margin and inner edge of the marginal ocellar 

 area of the hindwine- ; left wings rather bluer than the rio-ht. 

 ihe marginal spots of the forewings are of the drab ground colour and 

 edged internally with whitish, those of the hindwings are darker, and 

 edged externally with whitish. Owing to the thinness of the scaling, 

 the darker suffused ground colour is accompanied by a distinct trace of 



