and indented, and frequently much interrupted. The 

 outer margin is dotted with black. Hind wings pale grey 

 crossed with two or three black streaks slightly waved, 

 and bordered within the outer margin with a waved line 

 of dots. 



Localities for this species are Stockton near York, Scar- 

 borough, Darlington, Brighton, Eltham, Tenterden, Lewes, 

 Bristol, Manchester, Faversham, Horndean, West Looe, 

 Newnham', Lyndhurst, Pembury, Worthing, Swinhope, 

 Halton, Glasgow, Plymouth. 



The situations where it is found are fir and other woods, 

 where it is to be seen at rest on the trunks of trees in the 

 day-time. 



The perfect insect appears at the end of March, and in 

 April, May, June, and July. 



The caterpillar is reddish or buff-black, the back darker 

 than the sides, which have a black line along them, and 

 on the sixth and seventh segment is a black cross line. 



The date of the appearance of the caterpillar is in 

 August and September. 



It feeds on the larch, the willow, the poplar, the elm, 

 and the alder. 



The chrysalis is found among moss. 



TEPHROSIA EXTERSARIA. 



BRINDLED WHITE SPOT. 



Plate XXL Figure 3. 



THIS insect measures from a little over one inch and a 

 quarter to nearly an inch and a half in expanse. 



VOL. I. K 



