236 TORTRICINA. 



blue, like the colour in Apatura Iris. On the under-side the 

 anterior wings at the base blue, like A. Iris] at the apex like 

 Polyommatus Corydon. The posterior wings mottled, with blue 

 at the apex. 



The imago appears in June and July, and occurs at Birch, 

 Darenth, and West Wickham Woods ; at Mickleham, Norbury 

 Park, near Croydon, and other places round London ; in the 

 New Forest, &c. 



The pupa is 5 lines long, and of a dull brown colour. 



The larva, when full-grown, is from 5-6 lines long, of a dull, 

 pale amber-yellow colour, clouded with orange in the manner of 

 longitudinal stripes ; the spots or protuberances are also orange- 

 colour and shining. Head pale hazel and diaphanous ; shield 

 pale luteous and transparent. A dull, leaden-coloured spot on 

 the centre of the twelfth segment ; the anal one suddenly con- 

 stricted, and luteous. Beneath, the colour is pale, yellowish 

 pink. In shape this larva is somewhat flattened, narrowing 

 towards the anus, and sluggish in its movements. It is also 

 variable in its colours : in some instances, the ground-colour is 

 dirty white, the cloudings more distinct, more isolated, and 

 plum-coloured. In its young state it is much brighter coloured 

 than when full-grown, and may be found in August ; it lives 

 through the winter and spring, and goes into pupa in May, pre- 

 viously making a cocoon, spun with whitish silk. After emer- 

 ging from the egg, the larva eats its way through the pericarp 

 of the Beech-mast into the seeds, which it enters at, or near the 

 bottom ; after feeding for some time in one seed, it proceeds to 

 the other, and after devouring the whole of it (leaving nothing 

 but excrement in its place), it eats its way out at the top, after- 

 wards seeking a convenient place to spin its cocoon. 



4. Pomonella, Linn. Alis anticis cinereo-fiih'ginosis, strigis nume- 

 rosis fuscis ; ad apicem brunneis obscuris ; macula ocellari magna, 

 strigis cupreis ; posticis aureo -brunneis. tfExp. al. 8^-9 lin. 



Head pale umber, the scales tipped with grey ; grey behind. Face 

 slightly darker than the head. Eyes black. Palpi slightly longer 

 than the head, smoky black ; pale at the base above and between. 

 Antenna fuscous. Thorax umber, speckled with grey. Patagia 

 paler than the thorax. Anterior wings dull umber, with dull grey 

 streaks ; at the apex is a glossy chestnut-brown mark, bearing the 

 ocelloid patch. At the base is an umber truncate patch, marked 

 anteriorly with geminated, transverse, wavy grey streaks, which at- 

 tain the dorsal margin ; it extends one-third along the costa, and 

 has its posterior edge slightly waved ; beyond this patch, on the 



