4 THE ENTOMOLOGIST. 



whilst in others it is surrounded with white or pale blue scales, 

 and consequently very distinct. Many specimens have a discoidal 

 spot on the hind wings also, and these too are sometimes encircled 

 with blue scales; but in the majority no trace of any such spot 

 is to be found on the inferior wings, even when searched for with 

 a strong magnifier. Among the corydon collected at Ventnor are 

 twenty specimens similar, as regards the discoidal spot, to the 

 example represented, Plate L, fig. 11. Only three, however, of 

 these are exactly identical in the character of the hind-marginal 

 markings of the specimen figured, though several of them are but 

 slightly modified therefrom. The fringes of all the wings in this 

 sex are chequered brown and white, rather than black and white, 

 as in the male. Further, the white sometimes gives place to a 

 pale brown tint, but the chequered character is retained.* As is 

 probably well known, the females of several species of Lyccena 

 assume, more or less constantly and in greater or lesser degree, 

 the coloration of the male. As regards female corydon, the 

 most highly specialised development of this aberration is var. 

 syngrapha, Kef. Although I have not seen any British example 

 quite like Keferstein's variety, as figured by Dr. Lang,! there 

 may be such in the collections of British entomologists. The 

 nearest approach to it I have yet obtained is figured, PI. I., fig. 12. 

 Other specimens, taken with this example at Ventnor, exhibit the 

 male colour, either on all the wings, or on some of them. Thus, 

 one has sundry dashes of blue towards the hind margin of left 

 inferior wing only ; three others are suffused with blue at the 

 base, and have a series of blue triangular dashes internal to the 

 orange crescents on the hind wings ; whilst a fifth has a 

 longitudinal streak of blue along the inner margin of left 

 primary, in addition to triangular dashes on inferior wings. 



UNDER SIDE. 



Male and female corydon are not normally alike in the colour 

 of their under surfaces. In the first the fore wings are whitish 



* The only female specimen differing from the type in this respect, which has come 

 under my notice, is an exami^le from Folkestone. This is slaty brown, with very 

 indistinct orange markings and white fringes, in which the unassisted eye fails to 

 detect the slightest trace of brown. Under a strong glass minute patches of brown 

 are seen towards the tips of the cilia. Altogether this insect seems to resemble 

 L. icarus on the upper side, but the markings of its under side are those of typical 

 female corydon. It is probably a hybrid. 



t ' Butterflies of Europe,' PI. XXVI., fig. 7. 



