132 TORTRICINA. 



b. Having a dark coloured rounded patch at the 



base, on the dorsal margin Species 8-12 



c. By an oblique straightish striga Species 13 



C. Anterior wings with fasciae Species 14 



1. ramella, Linn. Alis anticis niveis ; margine dorsali subnebulosis, 

 cinereo nigroque strigatis, apice ferrugineo. Macula ocellari ad 

 angulum analem plumbea aut caerulea, punctis nigris; posticis 

 albidis, margine apiceque fuscis. <5 Exp. al. 6-^7 lin. 



Head snow-white, slightly black in front between and below the 

 antennae. Face white. Eyes black. Palpi snow-white. Antennae 

 pale grey, darkest at the apex, the basal joint clothed with black scales. 

 Thorax snow-white, speckled with black in front and behind ; patagia 

 snow-white. Anterior wings snow-white, with black ferruginous and 

 lustrous blue markings. The costa is maculated from the base to the 

 middle with black, and from the middle to the apex are six oblique 

 streaks of brown colour, most intense on the costa and becoming broader 

 and darker as they approach the apical spot, which is ferruginous; these 

 streaks converge to a point just within the apical margin. The dorsal 

 half of the wing is clouded and streaked with black mixed with white, 

 there being a roundish patch of the latter colour towards the base. 

 The ocelloid patch at the anal angle is obscure and marked with lus- 

 trous blue streaks, and bordered within with ferruginous ; between 

 this patch and the costa is a black cloud streaked with lustrous blue. 

 A few black dots near the base, towards the costa. Apical scales 

 black below the apex, then snow-white. Cilia smoky black, inter- 

 rupted by two white streaks below the apex, merging gradually into 

 very pale grey at the anal angle and iron-grey beyond. Posterior 

 wings white at the base, gradually merging into fuscous at the mar- 

 gins. Marginal scales fuscous, with straw-coloured bases. Cilia 

 white at the anal angle, very pale grey towards the apex. Abdomen 

 very pale fuscous grey, the caudal tuft pale drab. $ Exp. al. 8-&J- 

 lin. In colour darker than in the tf . 



This beautiful distinct species is not variable, save as to size, 

 and is at once distinguished from the rest of its congeners by 

 the pure white ground colour of its anterior wings. It is rather 

 uncommon. 



The imago appears in June at Darenth, Plumstead and West 

 Wickham Woods, Sydenham, also at Dartford Heath Fence. It 

 seems to be attached to the White Poplar. 



2. Mitterbacheriana, Schiff. Alis anticis runs, semifascia recta basi 

 saturatiore margine dorsali, albo postice marginata ; posticis brun- 

 neis. ^ Exp. al. 6-J-7 lin. 



Head dull ferruginous, paler close to the eyes. Face pale ferru- 



