334 CHAPTER XLVIL 



the spot where they abound, and yet seldom see them. 

 Thus the coal-black Satyrus Actea swarms in a parti- 

 cular part of the Fenestra Valley, but is rare else- 

 where. Melanargia Syllius, a kind of Marbled White, 

 is extremely abundant on the sea rocks east of Nice, 

 but to the west of the town you will find scarcely a 

 single one. Lyccena Orion is so plentiful at the north 

 end of the St. Andr gorge that you can catch as 

 many as you wish ; but I know of no other locality 

 nearer than Levens. Cannes has almost a monopoly 



Fig. 113. SATYRUS CIKCE. 



of the beautiful Thais Polyxena ; Nice of the lovely 

 Euphenoides ; Hyeres has the Jasius (Fig. 112), king of 

 European butterflies, and also the exquisite little 

 Thestor Ballus. The rare and valuable Tliecla Roboris 

 is confined to a spot not many hundred yards in 

 extent. This butterfly is purple without streak or 

 spot. P. Ale-xanor (Fig. 114) does not extend above 

 St. Martin nor below Bollena. It is so rare that only 

 one other locality is known in France, viz., Digne in 



