205 
CHEIMATOBIA BOREARTA. 
Plate XXYIII. Figure 3. 
This insect measures from a little under to a little 
over an inch and a quarter. 
Male : fore wings pale grey with a faint tinge of dull 
yellowish, crossed by several indistinct waved lines and a 
central band of a darker shade, the latter followed by a 
pale band. Hind wings paler grey with, in some, a faint 
thin waved line across, and rather darker outer margin. 
The female is all but apterous. 
Localities for this species are York, Newnham, Man¬ 
chester, Marlow, Huddersfield, Brighton, West Wickham, 
Delamere Forest, Darlington, Bidston near Birkenhead. 
The situations where it is found are birch woods. 
The perfect insect appears in October. 
The caterpillar is pale green, with an indistinct yellow¬ 
ish line on either side below the back, and another on the 
sides ; the head brown. 
The date of the appearance of the caterpillar is in June. 
It feeds on the birch. 
The chrysalis is enclosed in a slight cocoon placed 
underneath the ground. 
PORABIA DILUTARIA. 
NOVEMBER MOTH. 
Plate XXYIII. Figure 4. 
This insect measures from a little over an inch and 
a quarter to a little over an inch and a half in width. 
