179 



The date of the appearance of the caterpillar is in Sep- 

 tember. 



It feeds on the fir. 



The chrysalis is placed in a cocoon on the ground. 



HALIA WAVARIA. 



THE T-MOTH. COMMON V-MOTH. 

 Plate XXV. Figure 11. 



THIS insect measures from a little over an inch to an 

 inch and a quarter in expanse. 



Male : fore wings dull grey with a very faint tinge of 

 purple. The first line dull black, and generally only con- 

 tinued as a short dash from the upper margin; second line 

 also dull black, generally short; central line dull black, 

 and lengthened so far as to form, with the two others for 

 the top, the centre of the letter T. There is, in some 

 specimens, a continuation of it in a waved line inwards to 

 the lower margin, on which is a small dark mark near the 

 base of it. Hind wings dull grey, with two or three dark 

 marks on the inner margin, and a blackish central spot. 



Localities for this species, which is very common in 

 most places, are York, Charmouth, Nafferton, Nunburn- 

 holme, Brighton. 



The situations where it is found are gardens. 



The perfect insect appears in July. 



The caterpillar is pale green, with four waved yellowish- 

 white lines along the back, and a pale yellow line on the 

 sides. 



