233 



LARGE BLUE BUTTERFLY. 



Polyommatus Arion. 

 PLATE XXXII. FIG. 

 Linn. Lewin, pi. 37. Don. 



CONSIDERABLY larger than any of the preceding, 

 sometimes measuring an inch and a half across the 

 wings. The upper side is pale violet-blue, with a 

 broad dusky border round the hinder margin of all 

 the wings, the male having a group of black spots 

 on the disk of the upper pair, of which the interior 

 one is transverse and somewhat curved, and the fe- 

 male has a similar group on the disk of all the wings. 

 The under side is ash-coloured, inclining to brown ; 

 the anterior wings with two ocelli towards the 

 base, an irregular band of 6 or 7 others behind the 

 middle, and a row of lunules, with a small white 

 mark adjoining each : the posterior wings bluish at 

 the base, where there are four scattered spots, the disk 

 bearing- a black lunule, behind which there is an in- 

 terrupted band of eight large ocelli ; the posterior 

 margin ornamented with a row of triangular or cres- 

 cent-shaped black spots; fringe white spotted with 

 brown beneath. 



