THE BROWN ARGUS. 159 



The caterpillar is brown, with, white lines. Feeds on 

 broom and other plants of the same order. 



The butterfly appears in July and August, and is very 

 frequently met with throughout the country on heaths, 

 commons, and downs, both on sandy and chalky soils. 

 In many places it is the commonest of the " Blues." 

 It has been found at Epping ; Coombe "Wood ; Darenth 

 Wood ; Box Hill ; Ripley, Surrey ; Brighton ; Lewes ; 

 Deal ; Lyndhurst ; Blandford; Brandon, Suffolk ; Holt, 

 -Norfolk ; Birkenhead ; Bristol ; Saruni, Wiltshire ; 

 Lyme Regis ; Parley Heath, Dorsetshire ; Manchester ; 

 York ; several places in Scotland. 



THE BROWIST ARGUS. 

 (Polyommatus Agestis.) (Plate XIY. fig. 6.) 



THOUGH this butterfly and the next are classed among 

 the " Blues/ 7 from their possessing the same structure 

 and habits, there is no trace of Hue in the colouring of 

 either sex, as in all the preceding species of Polyommatus. 

 In this species the colour of both sexes on the 

 upper side is a warm, dark brown, having on all the 

 wings a border of dark orange spots. The female hardly 

 differs from the male, except in having this border 

 broader, and more extended on the front wing ; where, 



