8 BKITISH BUTTERFLIES. 



v. — ? . The apical areas of the right fore- and hindwing ill-pigmented, the 

 brown parts pale, and in the hindwing the orange parts yellow. The Faucille, 

 July 27th, 1904. Tutt coll. 



£. — ? . A small patch, extending from about halfway up the outer margin of 

 the left forewing to the anal angle, about 3mm. wide, pallid, and the fringes 

 without dark streaks. Underside equally pale. Villar near Evolene, August 6th, 

 1899. Tutt coll. 



o. — ? . Normal size. With a pale blotch running from the anal angle 

 nearly to the discoidal of the left hindwing. Dover, August, 1903. Pickett coll. 



it. — ? . Normal size. With a small roundish pallid patch near the anal 

 angle of both forewings. Dover, August, 1903. Pickett coll. 



p. — $ . Large size. With two moderately large whitish patches (1) Near the 

 apex of the right forewing, and (2) On the inner margin of the right hindwing. 

 Evidently these two portions of the fore- and hindwing were situated under each 

 other in the pupal stage. Dover, August, 1904. Pickett coll. 



s. — ? . The left pair of wings slightly smaller than the right pair. The left 

 forewing with two smaller patches than in last (1) outside discoidal of left forewing, 

 (2) outside discoidal of left hindwing. These two portions of wing no doubt under 

 each other in pupa. Dover, August, 1903. Pickett coll. 



Barrett observes (Lep. Brit, hies, i., p. 85) that, in the " Stevens' 

 coll.," were "a series of $ s stunted in size or slightly crippled, in 

 which the blue scales are partially absent or entirely absent from 

 patches on one or more of the wings, leaving the patches brownish ; " 

 also " larger and more perfect specimens, still thinly scaled and of 

 brownish-blue or purplish, evidently the victims of insufficient or 

 withered food;" also " a $ from Wiltshire of a strange dark steel-blue 

 with broad brown margin and buff cilia." The same author (op. cit.) 

 speaks of $ s " almost white," other <? s "with whitish dashes from 

 the margin of the upperside," others " dark grey or steel-colour " in 

 the Webb coll. Webb notes (Ent., xxi., p. 134) that specimens occur 

 " occasionally at Dover with an apparent defect in the mature scaling 

 of the wings, making the insects affected look shining almost as though 

 they had been dipped in oil." 



Variation. — The variation of this species, in both sexes, is most 

 interesting. In its extreme south-eastern and south-western limits a 

 remarkable parallelism of variation is set up, a parallelism that is in 

 no way to be considered as producing identical forms, for, though a 

 similarity in the specialisation of colour is most noticeable, differences 

 in tint, size, and to some extent shape, make the races of Spain and 

 Asia Minor recognisable at a glance. Along the Rivieia of France 

 and Italy, the peculiar conditions of which appear to produce regularly 

 a double-brooded or partially double-brooded race, other marked 

 conditions prevail and stamp the species here very definitely, 

 although in no wise comparable with the Spanish races, albicans, 

 Bdv., amagonensis, Gerh., hispana, H.-Sch., etc., or the eastern 

 races, olympica. Led., corydonius, H.-Sch., caucasica, Led., or 

 syriaca, Tutt. One of these llivieran races, we have known for 

 some time as meridionalis : what is apparently another was 

 described in 1904 by Bartel from Italian specimens as rezniceki, 

 his description (largely comparative) leaving considerable 

 doubt as to whether the examples described from Bapallo, are really 

 the same as those from Hyeres, Ste. Maxime, Draguignan ( = meridio~ 

 nalis), or again those taken at Pardigon (for which Reverdin proposes 

 the name constanti). At any rate, the long series of Rivieran specimens 

 {meridionalis) in our possession is much nearer in the 3 s to typical 

 central European specimens (in some cases practically indistinguish- 

 able) than are any of the races from Spain and Asia Minor already 



