204 THE BOOK OF BRITISH BUTTERFLIES. 



England, though Newman and others mention its having 

 occurred in the following counties in some localities 

 in considerable numbers : Bedford, Huntingdon, Bucking- 

 ham, Northampton, Hereford, Gloucester, Somerset, 

 Devon, Dorset, Wilts, Hants, Shropshire, and Kent. 



The costal and hind margin of all the wings of the 

 imago (Figs. 238 and 239) are convex, the hind-wings 

 are slightly inclined to be scalloped, and the fringe is 

 white. The upper surface (Fig. 239) is a kind of steel- 

 blue, or a dark blackish-brown suffused with blue scales. 

 The blue scales, however, are confined to the central 

 portion of the wings, the margins being left darker by 

 their absence. Near the centre of the wings are several 

 distinct black spots, as well as a few others less distinct. 

 Their arrangement will be seen from the illustration. As 

 no other of our Blues possesses spots of this nature, they 

 will be sufficient for the recognition of the one before us. 

 The under-surface (Fig. 238) is pale brown in colour, 

 with a double row of indefinite black spots near the 

 hind-margin of all the wings, and within these a con- 

 siderable number of black spots with white circum- 

 ferences about nine on each fore-wing and thirteen on 

 each hind-wing. The sexes are similar. 



