233 
LARGE CLUE 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 violpt-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 wrings. 
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 Bmall white 
mark adjoining each : the posterior wings bluish at 
the base, where there are four scattered spots, the disk 
hearing 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. 
