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The caterpillar is reddish-brown, the second segment 
raised, the ninth still more so; a whitish-grey line on 
each side of the back. 
The date of the appearance of the caterpillar is in 
August, September, and October. 
It feeds on the birch, the lime, and the oak. 
PEKICALIA OYRINGARIA. 
LILAC BEAUTY. 
Plate XVIII. Figure 2. 
This insect measures from a little under to about an 
inch and a half in expanse. 
Male : fore wings a mixture of yellow, grey, and red¬ 
dish-pink, with two white or faint pink marks near the 
outer corner, and another on the upper margin. The 
second line crosses slantwise, followed by another short 
one outside it. Hind wings yellowish-red and grey, 
crossed by a darker line near the inner corner, and a 
row of a few dots near the middle. 
Localities for this species are York, Huddersfield, 
Worcester, Newnham, Bromsgrove, Cambridge, Lewes, 
Black Park, Manchester, Bristol, Pembury, Halton, 
Worthing, Stowmarket, Wavendon, Tenterden, Brighton. 
The situations where it is found are woods and gardens. 
The perfect insect appears in July. 
The caterpillar is variously bluish-brown or yellowish- 
green, with a brown stripe along the back, the sixth and 
seventh segment each with two small, and the eighth with 
a large prominence, the latter bent backwards. 
