JULY. 213 



on the back ; it feeds on the poplar and willow. The moth 

 is frequent in the southern counties. 



LEPIDOPTERA. GEOMETRIC^. 



HIPPARCHUS. 



Generic Distinctions. Antennae pectinated in the male, simple in 

 the female ; proboscis spiral, and shorter than the antennae ; palpi 

 meeting at the tip, basal joint very short, second long, the last 

 lanceolate ; wings, the lower pair are covered by the upper when at 

 rest, the margin of the former dentated. 



HIPPARCHUS PAPILIONARIUS. Emerald Moth. This 

 species measures more than two inches; it is of a deep 

 grass-green, with two rows of whitish spots across both 

 wings ; on the disc of each is an obscure crescent-shaped 

 spot of a deeper green than the rest. The caterpillar is 

 green, with a yellow line on each side, and reddish warts on 

 the back ; it feeds on the elm, lime, and beech. The moth 

 is not very common, either in England or Scotland. 



