FLOWER GARDEN PESTS. 
79 
the sap. It is a very harmful pest, and should be promptly 
destroyed by spraying the foliage repeatedly wjth an insecti 
cide. 
Rose Beetle (Cetonia aurata). — This handsome green and 
golden tinted beetle sometimes injures rose blooms by tearing 
off the petals to get at the pollen, its chief objective. The 
only remedy is hand picking. The Bracken Clock-Beetle 
(Phyllopertha horticolo) also feeds on the stems of roses. 
Hold an inverted umbrella and shake the flowers over this in 
dull weather, then the beetles will fall off. 
Sawflies. — The larvae of sawflies often injure the foliage 
or shoots of roses. These larvae are commonly called Slug- 
woims owing to their slug-like form. They either eat holes in 
Fig. 3 I. GARDEN FRIENDS— LACE-WING FLIES. 
Explanation. — Fig. i shows the Lace-wing, or Golden-eye (Chysopa perla), on a 
shoot laying its eggs, which are attached to a slender filament, as illustrated. The 
larvae (Fig. 4) are furnished with hairs and powerful jaws and feed voraciously on 
aphides. The parent has beautifully netted transparent green wings. 
the leaves, gnaw off the epidermis leaving the veins exposed, or 
bore into the pith of the shoots. There are several species of 
them. The leaf-feeders may be destroyed by syringing with 
an insecticide or dusting with hellebore powder or flour of 
sulphur. The pith-feeders can only be got rid of by cutting 
off any shoot which indicates their presence within by 
shrivelling. Such shoots should be burnt. 
Slugs and Snails.— Both do a good deal of harm in 
gardens, especially to ferns and seedlings. There are two kinds 
of harmful snails, the Common Snail (Helix aspera), and the 
Garden Snail (Helix hortensis). They are easily distinguished 
irom slugs by carrying their shells on their backs. There are 
