181 
The date of the appearance of the caterpillar is in 
September and May. 
It feeds on the medick (Medicago falcata) and the 
santfoin. 
The chrysalis occurs under the ground. 
PANAGRA PETRARIA. 
BROWN SILVER LINE. 
Plate XXV. Figure 13. 
This insect measures a little under to a little over 
an inch and a quarter. 
Male: fore wings silvery-brown. The first line rather 
dark brown, edged on the outside with a paler shade of 
silvery-grey, and slightly bent near the upper margin ; 
second line dark brown, edged on the outside with whitish 
and nearly straight; central spot dark brown. Hind 
wings silvery-grey, with a partial bar of pale brown. 
Localities for this species are York, Stowmarket, Syn- 
dale Park, Chilham Park, Perry Wood near Faversham ; 
Lvndhurst, Dorking, Manchester, Lewes, Oxford, Exeter, 
Pembury, Worthing, Tenterden, Newnham, Birkenhead, 
Bristol, Brighton. 
The perfect insect appears in May and June. 
NUMEIHA PULVERARIA. 
BARRED UMBIiR. 
Plate XXVI. Figure 1. 
This insect measures an inch and three quarters or 
a little over in expanse. 
