8o LEPTDOPTERA. 



on the under side, those most simiLir being diagonally opposite. 

 A not unfrequent, form of variation of the under side of the 

 female has the black spots produced into streaks, or even run 

 together in pairs, so that the fore wings exhibit a row of 

 black stripes. Others have the under side dull grey and the 

 spots small, or, as in the preceding species, have the under 

 side almost plain, with the exception of the stigmatic spot 

 of the fore wings, or have a portion of the spots atrophied. 

 The only striking aberration — away from the general tendency 

 of variation already noted — which I have seen from the North, 

 is that of a female taken in Scotland by Mr. Charles Watts, 

 which has two clear white spots near the margin of one of 

 its fore wings. 



Double-brooded. On the wing in May and through June, 

 and again in the middle of July and through August. But 

 in the Hebrides, and probably in other remote districts of 

 Scotland, there is but one brood in the season — in June and 

 July ; and there is reason to believe that the large specimens 

 brought from the North are all of the single-brooded race. 

 It is positively stated in Tlic Entomolorjisihj Mr. H.C. Sand- 

 ford, that there is also but one brood in the season at Cork. 

 That this should be the case on the south coast of Ireland 

 appears almost incredible, but I think that it is frequently so 

 in the north and north-west of that country. 



Larva. — Rounded above, somewhat resembling the shell 

 called a Chiton ; dilatod and lobed at the sides ; segments 

 deeply divided. Head black, visible when crawling — at other 

 times concealed by the second segment. Body bright apple- 

 green or olive-green, dorsal line darker, spiracular line 

 whitish-green ; between the dorsal and spiracular lines are 

 three oblique pale lines on each side of each segment, the 

 whole body covered with minute black raised dots, each 

 emitting a hair ; under side of body and legs green. Usually 

 ■on Ononkspinosa. Mr. Buckler found eggs upon Lotus corni- 

 culatus, from which the larvse were hatched, but did not reach 



