TORTRIC[NA. 



135 



4. subarcuana, Douglas. Alls anticis einereis, ad costam fusces- 

 centibus ; medio longitudinaliter pallide brunneis ; posticis nitidis 

 griseis. $ Exp. al. 77^- lin. 



Head grey. Face paler. Eyes black. Palpi above and at the 

 sides grey; paler beneath and between. Antenna} fuscous, some- 

 what grey at the base. Thorax grey. Patagia slightly paler. 

 Anterior wings grey, with fuscous markings, and irrorated with 

 dusky atoms. Near the base, on the dorsal margin, commences a 

 faint undulating white line, forming two arches in its course, ter- 

 minating at the apex, and dividing the surface of the wing into two 

 portions ; that towards the costa is clouded with fuscous, most intense 

 close to the line ; the portion towards the dorsal margin grey, with 

 a dense dusky irroration, the margin regularly maculated with iron- 

 grey. The roundish space at the anal angle represents the ocelloid 

 patch. The costa is streaked throughout its course, the streaks 

 towards the apex being geminated. The apical margin dusky. 

 Apical scales whitish, mottled with drab, cilia grey, with the tips 

 paler ; a dusky streak runs through both, below the apex. Posterior 

 wings pale fuscous, with a pearly lustre. Marginal scales and cilia 

 straw-colour. Abdomen fuscous, the caudal tuft drab. $ Exp. al. 

 6|- lin. In general colour not so rich as in the tf . 



This species is noticed in the Museum Catalogue (Stephens), 

 p. 39, as a variety of Anch. Marcuana; but its smaller size, 

 sombre-coloured, narrower, and sharper-pointed anterior wings, 

 are differences which entitle it to rank as a species. It is allied 

 to A. biarcuana and A. diminutana ; about the size of the latter, 

 and distinguishable from both by the longitudinal wavy line being 

 faintly expressed, and by the colour above and below it being nearly 

 the same, whereas iu the two species mentioned the dorsal 

 portion of the wing is always the paler. 



The imago appears in May and June, and again in September, 

 and occurs at Wimbledon Common, Whittlesea Mere, and other 

 places in Cambridgeshire. 



5. diminutana, Hub. Alis anticis ad apicemrufis; vitta lata undata 

 per totam marginem dorsalem cinerea ; posticis fusco griseis. 



c? Exp. al. 6 lin. 



Head drab, darkest on the vertex. Face paler. Eyes black. 

 Palpi drab, dusky at the apex, paler beneath. Antenna? cliab, paler 

 beneath. Thorax drab in front, pale brown on the vertex. Patagia 

 drab at the base, with a reddish tinge at the apex. Anterior wings 

 drab, irrorated with dusky atoms, and ferruginous markings. 

 A whitish undulating, longitudinal line divides the surface of the 

 wing into two distinct portions ; it commences very faintly on the 

 dorsal margin, near the base, proceeds and undulates upwards, form- 



