AGRIADES CORIDON. 11 



in Tuscany, the chief variation in the $ s (both from the plain and 

 hills) is in the breadth and intensity of the dark outer marginal 

 band of the forewings, in some narrow but decidedly black, in others 

 more developed, but much paler, whilst in others it is much broader 

 than usual. The fringes of the $ vary somewhat in the whiteness of 

 the tint, but more in the blackness or brownness of the dashes, and 

 in their width ; they are always, however, widest on the outer margin, 

 and the fringes may be black-chequered, wholly \Yhite(cdbo fimbria ta, n.ab.), 

 or white edged with black (albonigrofimbriata, n. ab.). The black dashes are 

 almost always more feebly developed on the hind- than on the forewings. 

 We have many examples with quite white fringes to the hindwings (semi- 

 albojimbviata), but very few with them quite white on the forewings if a 

 lens be used ; there is one example from the Weesen Marsh, another from 

 Arolla, another from Andermatt, another from Simplon, another from 

 St. Moritz, another from Abries, and another from Gresy-sur-Aix, with 

 almost entirely white fringes on fore- and hindwings. Blachier notes 

 one from Moutiers with white hindwing fringes, but faintly marked 

 with grey on forewings, and Reverdin a similar one from Sierre ; 

 Wheeler observes that there is never more than the faintest indication 

 of dark lines in the fringe of the hindwings of his Assisi specimens, 

 and that they are sometimes perfectly white ; the forewings also 

 generally having the dark lines only very slightly marked; Weir notes 

 (Proc. Stlt. Lond. Ent. Soc, 1886, p. 60) an example that had the 

 fringes spotless white; Pickett also records (op. cit., 1902, p. 11-4) $ s 

 from Dover with nearly white fringes. South exhibited at the meet- 

 ing of the South London Entomological Society, held on October 26th, 

 1893, a specimen with its fringes perfectly white. The following- 

 tabulation helps to show the range of variation in the g s of this 

 species combining the colour and modification of the margin of the 

 fore wing : 



1 . — Pale silvery-blue, with marginal series of pale interneural lunules = ab. 



foicleri-pallidula, n. ab. 

 1«. — Pale silvery-blue with indistinct greyish marginal ocellated spots = ab. 



apennina, Zell. 

 1/;. — Pale silvery-blue with well-developed marginal ocellated spots = ab. punctata- 



pallidula, n. ab. 

 1c. — Pale silvery-blue with narrow blackish border, spots only appearing as 



whitish marginal lunules = ab. albocrenata-pallidula, n. ab. 

 Id. — Pale silvery-blue with wide blackish border, spots showing only their 



greyish inner edges = ab. subfusca-pallidula, n. ab. 

 le. — Pale silvery-blue with wide blackish border, divided throughout by pale 



line = ab. divisa-pallidula , n. ab. 

 1/. — Pale silvery-blue with wide blackish border, extending suffusedly towards 



disc and along costa = ab. marginata-pallidula , n. ab. 

 la. — Pale silvery-blue with narrow black border without marginal spots = ab. 



angustimargo-pallidula, n. ab. 

 lh. — Pale silvery-blue with broad black border without marginal spots = coridon, 



Poda. 



2 . — Bright silvery-blue, otherwise as in 1 = ab. fowleri, South. 

 2a. — Bright silvery-blue, otherwise as in la = ab. indistincta, n. ab. 

 2b. — Bright silvery-blue, otherwise as in lb — ab. punctata, Tutt. 

 2c. — Bright silvery-blue, otherwise as in lo' = ab. albocrenata, n. ab. 

 2d. — Bright silvery-blue, otherwise as in ld = ab. subfvsca, n. ab. 

 2e. — Bright silvery-blue, otherwise as in le = ab. divisa, n. ab, 



2f. — Bright silvery-blue, otherwise as in l/=ab. marginata, Tutt. 



2g. — Bright silvery-blue, otherwise as in lo = ab. angastimargo, ti. ab. 



2h. — Bright silvery-blue, otherwise as in l/i = ab. caeraleo-marginata, Tutt. 



3 . — Pale silvery greenish-blue, otherwise as in l = ab. foivleri-viridescens, n. ab. 

 Ba. — Pale silvery greenish-blue, otherwise as in lrt = ab. indistincta-viridescena, n. ab. 



