54 BUTTERFLIES OF THE RIVIERA 



V. O.-albumn. 



TIMES OF APPEARANCE. From April to September. 



HABITAT. Generally distributed. 



OVUM. The ova are laid in May, by hybernated 

 females. I think I saw a $ of either this species or 

 else Vanessa Egea, deposit an egg on Robinia Pseudo- 

 Acacia ( Acacia), at Saint-Martin- Vesubie, July 24 th 1891. 



The ovum was pear-shaped, if I remember, and 

 ribbed longitudinally with grooves ; it was shiny. 

 Its colour was dark green. The circumstance is 

 curious, as all the known food-plants of the above- 

 mentioned species, are in no manner related botani- 

 cally to the tree on which the egg was found. 



LARVA. On Elm, Currant, Sloe, Hop, Nettle, 

 Willow and Poplar, from May to August. 



OBSERVATION. The spring brood of C. album is 

 lighter in colour than the summer form of the species. 



"V. F*olyclxloros. 



TIMES OF APPEARANCE. From March to May, and 

 from July to September. 



HABITAT. Fairly common everywhere. 



OVUM. The egg of the present species has eight 

 longitudinal ridges, which can vary in number from 

 seven to nine, commencing near the crown, and 

 terminating at the base, just where the egg adheres to 

 the twig. 



LARVA. On Elm, Sallow, Cherry, and also on Pyrus 

 aria (White Beam Tree). 



VARIETIES. v. Testudo 

 and v. Pyromelas. 



