JULY. 213 



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

 is frequent in the southern counties. 



Lepidoptera. GeOMETRIDtE. 



HIPPARCHUS. 



Generic Distinctions. — Antenna 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 PAPiLiONAEius. 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. 



