150 CHALK HILL BLUE 



Underneath, the wings are shnilarly marked to those of the 

 male, but the ground colour is very much darker, the spots 

 much larger and more distinct, with white rims, and there are 

 some orange marks within the margin of the fore wings, and 

 a decided row of orange lunules within that of the hind ones. 



The caterpillar is green, with yellow lines on the sides and 

 the back. 



Many varieties of this species have occurred, the eyes being 

 more or less distinct, and the brown more or less diffused over 

 the wings of the male. 



One, described as a species by Miss Jermyn, under the 

 name of 'Polyommatus Calsethys,' has the wings "above brown, 

 with a blue disc and a whitish discoidal spot Avith a black 

 pupil; beneath, the posterior wings have a discoidal, white, 

 cinctured crescent, with a waved band of seven undulated spots 

 towards the hinder margin." 



