ri)l<TRICID.¥,~HETEROGNOMON. 193 



large black spots near the posterior corners ; anal plate 

 yellowish-grey with two black spots. 



January to June on ivy, privet, honeysuckle, the various 

 species of Vacciniurn and Sedum pcdustre ; even on oak. 

 Apparently attached to plants having firm, strong leaves. 

 On ivy it is often most mischievous, attacking several 

 leaves together and gnawing away the parenchyma so as to 

 leave very unsightly patches of scarred leaves. 



Pi'PA apparently undescribed. In the larval habitation. 



The moth inhabits shrubberies, gardens, and hedges, as 

 well as the borders of woods, and is common in the outskirts 

 of London. Not very abundant but found throughout Eng- 

 land and Wales, with the possible exception of Northumber- 

 land ; and in Scotland to Aberdeen, Moray, Perthshire, and 

 the Clj'de Valley. In Ireland it is recorded from Cork, the 

 Dublin coast, and Sligo. Abroad it is common through 

 Central and Northern Europe, includiug Norway. 



2. H. viridana, L — Expanse f to I inch (18-22 mm.). 

 Fore wings green, the hind wings smoky brown. 



Antennas of the male slender, pale brown ; palpi whitish- 

 green ; head and thorax light green ; abdomen silky brownish- 

 white. Fore wings somewhat rhomboid, the co&ta neither 

 folded nor raised, but well arched; apex blunt; colour 

 bright leaf-green, without markings; cilia greenish-white. 

 Hind wings pale smoky brown. Female similar, a little 

 stouter. 



Underside of the fore wings pale smoke-colour, with the 

 margins narrowly white. Hind wings shining white. 



Usually not variable, but in some seasons occasional speci- 

 mens are found in which the green colouring is replaced by 

 dull yellow or primrose colour. I have found this form about 

 maple trees. 



On the wing from the p. J of June to August. 



VOL. X. N 



