48 BRITISH BUTTERFLIES. 



the spots being large, although not larger than those from certain 

 Piedmont and French localities; they also agree in the strong develop- 

 ment of the dark marginal lunules, but those of the fore wings have no 

 orange chevrons in meridionalis, and only very weak ones on the hind- 

 wings, whilst they are described as an almost unbroken row of red 

 wedge-shaped spots in rezniceki.' The 2 s appear to be alike in their 

 brown ground colour, but there is often no distinct discoidallunule on the 

 hindwing in meridionalis, nor are the discoidals of either wings edged 

 with pale as described in rezniceki; nor in meridionalis is there an uniform 

 type in the development of the marginal band of orange lunules on the 

 upperside, the normal variation in this respect being shown in a fair 

 series of examples, whilst in none are the marginal spots edged with 

 white as described in rezniceki. The 2 forms agree again in the 

 strongly-developed spotting of the underside, but the red lunules in 

 meridionalis do not appear to be so uniformly strongly developed and 

 brightly coloured as Bartel notes for rezniceki ; nor do we trace any 

 close similarity between the colouring of these and the Engadine 

 specimens w T here they appear to vary a good deal. In size our meridionalis 

 vary from — $ s 34mm. -41mm., 2 s 31mm. -37mm. Bartel gives those 

 of rezniceki — $ s 29mm. -30mm., $s 29mm. -31mm., a difference that 

 can hardly be due to a different mode of measurement (we measure the 

 size of the insect from the apex to centre of thorax x2). Rowland- 

 Brown notes (in litt.) that he has the var. meridionalis from Brantes, 

 Vaucluse, taken in May, 1907. 



j3. var. rezniceM, Bartel, "Ent. Zeits. Gub.," xviii., p. 117 (1904); Seitz, 

 " Gross-Schmett.," i., p. 315 (1909); Kebel, " Berge's Schmett.," 9th ed., p. 72 

 (1909). — The J above lighter than var. apenniiia, pale greenish-blue (greenish- 

 silver) ; a fine black discoidal line on the forewing; the marginal border of the 

 latter very broad, blackish-grey, lighter than in typical Engadine specimens, not 

 sharply defined inwardly, but bounded by a conspicuous row of whitish arcuate 

 spots ; in some examples there appear behind these latter a row of fail ly conspicuous 

 blackish spots, which seem to be very finely edged externally with whitish. The 

 hindwings are also very strikingly distinct, in that, in front of the black border a 

 row of black spots is placed, which are three times as large as usual, and have a 

 fairly broad whitish border, in consequence of which they stand out very strongly. 

 In front of this row of spots a blackish-grey clouding, in the form of a narrow 

 stripe, is visible ; the central spots are not rarely bordered with red as occurs in 

 ordinary coridou ab. suavis. The underside fairly light, whitish on the fore- 

 wing, light grey on the hindwing, the latter with the blue-green much more 

 extended along the inner margin and the base, and more strongly marked than in 

 other forms. The underside is, however, more spec'mlly distinguished by the 

 exceedingly strong spotting which gives the insect a very different facies, approach- 

 ing that of A. beliargu* : the size of the marginal row of spots is specially striking, 

 but the lunules are also greatly increased in size ; the submarginal row of rod 

 wedge-shaped spots is also very pronounced, almost unbroken. The white border- 

 ing of the spots of the hindwings, which is also fairly broad on the forewings, 

 gives the insect a very light appearance on the underside. ? . The characters 

 less markedly pronounced, which is the ease with other local races of A. coridou in 

 this sex. but still the form is distinguishable, being lighter on the upperside than 

 are ? s from the Engadine, leaning strongly towards brown : the discoidal spot of 

 both fore- and hindwings is noticeable, very slightly bordered with light; an 

 obsolescent marginal band of red spots, edged on both Bides with very faint 

 black lunules; hindwings with strong black-bordered red spots; the 

 marginal spots also edged with white. The underside of the ? is, as in 

 the 3 , exceedingly strongly marked ; the marginal spots, outside the 

 ocellated row, stand out, especially strongly; the red wedge-shaped spots 

 are, as in the $ , exceedingly large 1 and bright, and the red spots are also 

 conspicuous on the forewings; the colouring of the underside is something 

 like that of the Engadine specimens, but the hindwings are somewhat lighter 



