92 BUTTERFLIES OF THE RIVIERA 



LARVA. On different Grasses, especially Melica 

 ciliata, in May. 



PUPA. " In the middle of May, the caterpillar 

 changes to a reddish brown pupa, without angles or 

 tubercles, and rather rounded in shape. It is sus- 

 pended." Lg. 



VARIETY. v. Darwiniana. 



Rather smaller than the type, the white band on 

 the u.-s. of the h.-w. narrower, and of the same 

 width throughout. 



OBSERVATION. Common ; but local. 



O. Dorus. 



TIME OF APPEARANCE. July. 



HABITAT. Nice, &c., in the Vallon Obscur ; and at 

 Saint-Martin-Vesubie, where it is common, especially 

 on the Chemin de Venanson, and the Route de Saint- 

 Martin, on the ascent to the Balme. 



I have frequently seen little groups of eight or ten, 

 hovering over some plant or other attractive object. 



LARVA. -*- On Agrostis, in June. 



OBSERVATION. I possess a ^ of Dorus, which was 

 taken in the mountains, some years ago, in which the 

 black spot near the apex is considerably enlarged, 

 about twice the normal size. 



This dot is surrounded with a distinct light fulvous 

 ring. Most of the specimens I have hitherto met with 

 have this ring hazy. The number of spots also are 

 often inconstant. 



O. Rampliilns. 



TIMES OF APPEARANCE. May to September. 

 HABITAT. Common everywhere. 



