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dark grey line across, a little above the middle ; another 
rather more waved one lower down, followed by a fainter 
third one, the space between being sometimes filled in 
with a shade of darker grey, the outer margin with a row 
of minute black dots. 
Localities for this species are Brighton, Falmouth, 
Faversham, Dorking, Worcester, Uppingham, Humber- 
stone, Anstey. 
The perfect insect appears in June and July. 
The caterpillar is dark brown on the fore part and 
beyond the middle, the remainder yellowish-grey, with 
slanting brown lines along the back, and a whitish line on 
the sides with a white spot above it. 
The date of the appearance of the caterpillar is in April 
and May. 
It feeds on the common avens (Geum urbanum ). 
The chrysalis is found under the earth. 
ACID ALIA INORNARIA. 
PLAIN WAVE. 
Plate XXIY. Figure 13. 
This insect measures from a little over an inch to an 
inch and a quarter across. 
Male: fore wings dull yellowish-grey. The first line is 
dark grey, second line dark grey: central line grey but 
indistinct, and notextending to the upper margin; central 
spot blackish. Hind wings also with a central dark dot. 
