ARGYRESTHIA. 183 
spots on the costa; cilia greyish-ochreous. Posterior wings grey, with 
paler cilia. 
In the variety ossea the anterior wings are cream-colour, the inner 
margin remaining white, and the dark basal streak and dark spot on 
the inner margin becoming rather obsolete. 
Very abundant among hawthorn in June and July. The larva 
feeds in the leaf-buds of the hawthorn in May. 
3. purpurascentella, Sta. Zool. 1849. App. v. Alis anticis 
purpurascente-griseis, costam yersus dilutioribus, dorso albo, macula 
obliqua fusca in apicem obsoletius producta, pone medium interrupto, 
punctis duobus costs apicem versus albis. Exp. al. 5 lin. 
Head white, with a few grey hairs. Face and palpi white. Antenne 
white, annulated with dark fuscous. Anterior wings greyish-purple, 
paler on the costa, with the inner margin white, interrupted beyond 
the middle by an obliquely placed fuscous spot, which, though very in- 
distinctly, appears to be continued towards the apex of the wing; on 
the costa before the apex are two or three small white spots; cilia 
greyish-purple. Posterior wings grey, with paler cilia. 
[ have only two specimens taken near Sheffield and in the 
south of Scotland, in July. I do not feel quite confident that it 
is distinct from mitidedla. 
4, semitestacella, Curt. Ent. Mag. i. 191 (1833); Id. B. E. fo. 
719; Step.; Sta.—parenthesella, Z. g.8.? lis anticis ochreis, dorso 
usque medium niveo, macula saturate ochrea terminato. Exp. al. 6- 
6} lin. 
Head white, with a few yellowish hairs. Face white. Palpi yellow- 
ish. Antenne white, annulated with dark fuscous. Anterior wings 
ochreous, with the inner margin white to the middle, where there is a 
dark ochreous spot, beyond which are only a few whitish scales on the 
inner margin; cilia greyish-ochreous. Posterior wings grey, with paler 
cilia. 
Common among beeches in August and September. 
5. spiniella, Zell. Isis, 1839, p. 204; Sta. Alis anticis Zuteo- 
brunneis, dorso albo, macula saturate fusca (seepe ut fascia obliqua obso- 
lete producta) pone medium interrupto, costa albo fuscoque punctata, 
strigulis duabus ante apicem albidis. Exp. al. 6-6} lin. 
Head whitish. Face and palpi pale yellowish, Antenne white, 
annulated with dark fuscous. Anterior wings yellowish-brown, with the 
inner margin white, interrupted by a dark fuscous spot beyond the 
middle, which can sometimes be traced indistinctly across the wing as an 
oblique fascia; the costa is delicately spotted alternately white and 
fuscous, with two larger whitish spots before the apex; cilia greyish- 
brown, at the anal angle grey. Posterior wings grey, with paler cilia. 
Occurs in the north of Kingland and Scotland, among mountain- 
ash, in August and September. 
