THECLA PRUNI. 17 1 



The larva (Fig. 188) is of the shape common to the 

 genus, the head, which is brown on the crown and 

 black at the mouth, is retractile within the second 

 segment. There is a shallow, longitudinal fissure down 

 the back, and the segments are distinctly marked. The 

 two ridges on the back, the collar round the second 

 segment, and the dilatations below the spiracles, are 

 fringed with hairs. The colour is pale green. There 



189 



THECLA PRUNI. 



are oblique yellow lines on the segments, and the 

 spiracular region bears a yellow stripe. 



The costal margin of the fore-wings of the imago 

 (Figs. 189 and 190) is nearly straight and the hind- 

 margin rounded. The hind-margin of the hind-wings is 

 slightly scalloped, the last nervure but one being con- 

 tinued into a rather long tail. The border of the wings 

 is black and the fringe whitish. The upper surface 

 (Fig. 189) is dark brown, with two or three semilunar 



