TORTmCTDE. — PFKOXFA. 157 



middle of the costa, an oblique streak of the same near the base, and one or 

 two irregular ones towards the hinder margin, near which are some elevated 

 darker scales, and a few towards the base: posterior wings brownish. 

 Very prone to vary: some examples have the triangular patch on the costa of 

 the anterior whigs pale ferruginous; others dusky- or purplish-brown; or 

 in some it is almost obliterated ; and the anterior wings are occasionally 

 ashy-brown. 



Not very uncommon in the woods about London from July to 

 September ; found also in other parts of the country and apparently 

 abundant in the New Forest. " Loch." — Rexi. W. Little. 



Sp. 30. tristana. AUs anticis pallide j'avillaceix canisve, jmnctulis ohsoletissimis 

 scabris, fasciaque media abbreviata irregulari costali subtrigom fused. 

 (Exp. Alar. 8—9 lin.) 



To. tristana. Hylmer?—Ve. tristana. Sfrph. Caial. ii. 186. No. 7072. 



Anterior wings pale ash-colour, or hoary, with very obscure elevated dots ; 

 at the base is a faint oblique streak, and towards the middle of the costa an 

 irregular abbreviated, somewhat triangular, brown blotch or fascia: 

 posterior wings whitish-brown. 



Taken in similar places with the preceding insect, and at the same 

 periods. " Newcastle, &c." — G. Wuiles, Esq. 



Sp. 31. reticulana. Alts anticis pallide Javillaceis fusco obsolttl reticulatis, 

 posticis albicantihus. (Exp. Alar. 9 — 10 lin.) 



To. reticulana. Haivorih.—Ve. reticulana. Steph. Caial. ii. 186. A'b. 7073. 



Anterior wings pale shining ash-colour, the costa with obsolete irregular 

 brownish dots, somewhat disposed in an oblique fascia ; the disc obsolete, 

 reticulated with fuscous : posterior wings pale brownish, or whitish. 



Found, but rarely, with the two preceding insects, within the 

 metropolitan district. 



Sp. 32. bistriana. AUs anticis pallidis atomis fuscescentihus, strigaque obliqua 

 a hasi ad apicem alfeniqiie marginis tenuioris spadiceis. (Exp. Alar. 10 — 

 IQi lin.) 



To. bistriana. Huworth. — Pe. bistriana. Steph. Catal. ii. 186. No. 7075. 



Anterior wings pale, with minute dusky or chestnut atoms, rarely immaculate, 

 the costa pale; from the base to the apex runs a slightly waved bay- 

 coloured, or chestnut streak, and on the extreme inner margin a second, 

 broadest towards the base, and vanishing near the apex : posterior wings 

 pale, immaculate. 



The colour varies a trifle, but the width of the bay coloured streaks varies 

 considerably in diflferent specimens. 



