156 



The caterpillar is pale brown, with darker slanting 

 streaks on the fifth, sixth, seventh, eighth, ninth, tenth, 

 and eleventh segments. 



The date of the appearance of the caterpillar is in May. 



The chrysalis occurs under the ground. 



ACIDALIA BISETARIA. 



SMALL FAX-FOOT WAVE. 



Plate XXIII. Figure 10. 



THIS insect measures from about three quarters of an 

 inch to not quite an inch in expanse. 



Male : fore wings pale yellowish-grey, dusted with grey. 

 The first line is indistinct; second line blackish and 

 waved, bordered by a conspicuous grey band; central line 

 indistinct; central spot black. Hind wings also pale yel- 

 lowish-grey, with a dusty line across near the inner 

 corner; a dusky band some way within the outer margin, 

 within which is another of the same; central spot black; 

 the outer margin with a row of brown dots. 



Localities for this species, which is plentifully dis- 

 tributed throughout the country, are Poynings, Barn- 

 staple, West Looe, Worcester, Isle of Man. 



The perfect insect appears in June and July? 



The caterpillar is greyish-brown, with angular marks 

 of darker brown along the back, and slanting stripes of 

 the same on the sides. 



The date of the appearance of the caterpillar is in 

 August and April. 



It feeds on the dandelion ( Leontodon taraxicumj. 



The chrysalis occurs below the ground. 



