125 
CYMBID2E. 
HALIAS PllASINANA. 
Plate LXXXI. Figure 12. 
Localities for this species are York, Brighton, Looe, 
Lyndhurst, Bromsgrove, and near London. 
The situations where it is found are woods and lanes. 
The perfect insect appears in May, June, and July— 
July 4. 
The caterpillar is pale green dotted with yellow, the 
front edge of the second segment yellowish red ; the lines 
on either side of the back yellow. 
The date of the appearance of the caterpillar is in 
July and August. 
It feeds on the oak, the birch, the beech, the hazel, the 
alder, etc. 
The chrysalis is found in a strong cocoon. 
This insect makes a curious stridulous noise when flying. 
IIALIAS QUERCANA. 
Plate LXXXI. Figure 13. 
Localities for this species are the New Forest and near 
London. 
The situations where it is found are woods. 
The perfect insect appears in July. 
The caterpillar is yellowish green, the lines on the 
side of the back yellowish. 
The date of the appearance of the caterpillar is in May. 
It feeds on the oak. 
The chrysalis is found enclosed in a firm cocoon. 
