118 



THE ENTOMOLOGIST 8 EBCOHD. 



D. — A sei'ies of about four black 

 daslies follows the sub- 

 marginal spots on the ex- 

 treme edge of the wing. 



E. — A distinct vandyke almost 

 invariably occurs in the 

 front edge of the median 

 band on the subcostal 

 nervure. 



D. — A row of black dots follows 

 the submarginal sjoots on 

 the extreme edge of the 

 wing. 



E. — An indistinct vandyke some- 

 times occurs in the front 

 edge of the median band 

 on the subcostal nervure. 



HIND-WING. 



F. — The band following the 

 median (B) is rarely con- 

 tinued, and never con- 

 spicuously so at its hinder 

 edge. 



G. — The lower part of the wing- 

 paler than the upper. 



H. — Xo dark grey shade below 



the middle of the wing. 

 I. — Four gi'ey threads start 

 from the inner margin but 

 gradually become obsolete ; 

 the edge of the wing where 

 they arise is clouded with 

 dark grey and contains 

 four black spots. 



F. — The band following the 

 median (B) is almost in- 

 varialily continued dis- 

 tinctly, more especially at 

 its hinder edge. 



G. — The upper part of the wing 

 paler than the lower. 



H. — A dark grey shade below 

 the pale band. 

 I. — Four grey threads above 

 the pale band continued 

 across the wing in equal 

 intensity, commencing on 

 the inner margin as black 

 sjjots. 



UNDER SIDE. 



K. — An apical dark cloud is 

 sometimes present on fore- 

 wing, but no cloud or shade 

 on hind-wing. 



K. — A dark apical cloud is al- 

 ways present on fore-wing, 

 and a distinct grey cloud 

 is conspicuous at the outer 

 margin of hind-wing. 



GENERAL OBSERVATIONS. 



Except that unidentaria is slightly the larger insect, I see no 

 structural differences except in the genitalia as already recorded. All t he 

 markings are prone to considerable variation, esijecially the size and 

 shape of the median band, which is often bisected by a broad paler 

 shade. The best character for distinction appears to be the dark shade 

 on the hind wing, as it seems jjretty constant both on the upper and 

 under sides (H. and K.)." 



I have very little to add to this ; 1 would remark that the median 

 band oi ferrugaria, Haw., is never black, though sometimes very dull 

 brownish or greyish-red ; that a stronger point might perhaps be made 

 of the paler outer area of the fore wings in unidentaria ; that the fringes 

 oi ferrufjaria are much more distinctly spotted than ihosGoi unidentaria ; 

 that the contour of the outer margin of the central fascia, and of the 

 corresponding line on the hind wings, though very prone to vary, is 

 nearly always distinguishable in the two species ; ferrugaria seeming 

 never to be so deeply bent inwards below the middle, or the band so 

 attenuated on the inner margin, as is general in unidentaria ; and that 



