L YCJENIDM. 89 



with a broad blackish border, from the middle of the costa 

 round the hind margin of the fore wings ; and a row of black 

 spots along the hind margin of the hind wings. Frequently 

 there is also a broad straight stripe of blackish down the 

 costal margin of the hind wings. Cilia in both sexes white 

 with black dashes. 



Under side in both sexes pale silvery blue, fore wings with 

 a central perpendicular black streak, and a row of black 

 streaks beyond it ; hind wings with about a dozen black dots, 

 often indistinct, but most of them placed in an irregular, broken, 

 transverse series beyond the middle. 



Not very variable. The under side of both fore and hind 

 wings has sometimes a marginal row of faintly blackish 

 crescents, and the dots vary in size a little, as also does the 

 breadth of the dark margin of the fore wings, on the upper 

 side, in the female. Mr. J. Jenner Weir states that the 

 females of the second brood are frequently much darker in this 

 respect than those of the first. Very rarely, singular aberra- 

 tions occur. Mr. S. J. Capper has a female of a slate-grey ; 

 Mr. Webb, one with pale patches in the middle of the fore 

 wings, also a male which has the wings on one side violet, on 

 the other blue, and another with whitish di-ab fore wings, thinly 

 scattered with dark scales. A gynandrous specimen exists 

 in Mr. C. A. Briggs' collection, the right side being male. 



Double-brooded. On the wing in April and May, and 

 again at the end of July and in August, but in some seasons 

 the second generation is hardly seen, except in the most 

 favoured localities ; and prolDalsly, in its more northern range, 

 this brood is never produced. 



Larva, when full grown, three-eighths of an inch in length, 

 onisciform. Head small, retractile, purplish-brown, with an 

 ochreous streak in front. Dorsal region convex, the third to 

 the tenth segments each arched and crested with ridges, 

 which are cleft into humps on each side of the depressed 

 dorsal line. The latter is broad in the anterior part and 



