LYC^ENA BELLARGUS. 



193 



L. bellargus, Rott, L. adonis, Fabr. (Adonis Blue, 

 Clifden Blue, or Dartford Blue) (Figs. 219 to 221). 

 The brilliant sky-blue of the upper surface of the male 

 of this species far surpasses in purity and intensity the 

 blue of any other member of the genus. It is a south 

 of England butterfly, and is there almost entirely confined 

 to the chalk. It has been taken in Bucks, Lancashire, 



LYC^ENA BELLARGUS. 



Somerset, Gloucestershire, Devon, Dorset, Hants and 

 the Isle of Wight, Sussex, Surrey, Kent, and Argyll. 



The eggs are laid on the Horseshoe-vetch (Hippocrepis 

 comosa) twice in the year, the insect being double-brooded. 

 The first flight of butterflies takes place about the end 

 of May or beginning of June, and the second about the 

 middle of August. The larvae resulting from the second 



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