142 l.EriDOPTERA. 



collections. This province to be inaccurate, the MS. name 

 of Slevensata, after its original captor, has been suggested, 

 and is still in use. Its claim to the rank of a distinct species 

 has been strongly urged, principally on account of its habits, 

 which are certainly curious. It is usually taken on the hills of 

 tlie Kent coast about the blossoms of golden-rod and ragwort 

 and not about the juniper, and has even been found freshly 

 emerged upon the first-named plant. In examining some fine 

 specimens taken by Mr. F. J. Hanbury, on ragwort, further 

 evidence seemed to be furnished by the position of the discal 

 spot aiccnj from the central line ; but in working through an 

 immense series of the present species in all its varieties in 

 the collection of Dr. P. 13. Mason, I found that many speci- 

 mens of otherwise typical colouring and markings have the 

 discal spot distinctly separate from this line ; also that many of 

 the most strongly marked Scotch forms had the ground colour 

 nearly white, and that these appeared to interchange with 

 the Stevensata forms in every possible degree. No reliable 

 separating character could be found by the most careful 

 search. This result is confirmed by the results of examina- 

 tion of other large collections. Moreover, Colonel Partridge 

 tells me that he noticed a tendency in the Dover specimens 

 when disturbed to fly out to the juniper bushes on the 

 inaccessible side of the cliff. If this form, when reared, 

 should appear to he distinct from £. sohrinata, it will be an 

 exceedingly difficult species to describe, seeing that although 

 the shade of colour is peculiar, the markings, though differing 

 in intensity, are accurately the same. 



On the wing from July till the beginning of October, but 

 so far as can he ascertained, in one, slowly emerging, gene- 

 ration. 



Larva rather variable in appearance ; the ground colour is 

 either dark green or yellowish-red with a series of rust- 

 coloured dorsal blotches, intersected by a dark green dorsal 

 line, and bordered on either side by a yellowish line ; these 



