124 POPULAR ENTOMOLOGY. 



having ocelli on the hinder pair ; the under side in both is 

 brownish-ash colour, the upper wings having two ocelli near 

 the body, a slender streak, placed transversely, a row of ocelli 

 near the middle, and externally a row of dusky crescents edged 

 with reddish-yellow ; beyond these are dark spots on a white 

 ground ; the posterior wings have generally four ocelli near 

 the base, an angular white spot near the middle, and a 

 curved band of ocelli, succeeded by a series of markings 

 similar to those on the superior wings. The caterpillar is 

 hairy and of a green colour, subsisting chiefly on grasses. 



PoLYOMMATUS Aeion. Large Blue. This species mea- 

 sures an inch and a half; the wings are pale violet-blue, 

 with a broad dusky border round the hinder margin ; the 

 male having a group of black spots on the disc of the upper 

 pair, and the female a similar group on all the wings ; the 

 under side is ash-colour, inclining to brown ; the anterior 

 wings with two ocelli towards the base, an irregular band 

 of them beyond the centre, and a centre of lunules, with 

 a small white mark adjoining each; the posterior wings 

 bluish at the base, where there are four spots. This species 

 is rare, and there are two or three others still more so, 

 which on that account will not be described. 



PoLYOMMATUS ARGiOLUS. (Plate IX.) Azure Blue, An 



