INJURIOUS INSECTS. 43 



(or rarely twice as large on succulent shoots or on the 

 fruit). 



Remedies. Kerosene emulsion, or whale-oil soap (2 Ibs. 

 to the gal.), in the winter, for the East. Upon the Pacific 

 coast, resin washes. 



Scale-Insects. Various species of small insects inhabiting 

 the young growth of trees, and sometimes the fruit, in one 

 stage characterized by a stationary scale-like appearance. 

 Kerosene emulsion and resin washes in the winter are the 

 best remedies. Species which migrate onto the young 

 growth in spring can be readily despatched at that time by 

 kerosene emulsion. 



Snails. These animals are often very troublesome in green- 

 houses, eating many plants voraciously. 



Preventives. Trap them by placing pieces of turnip, 

 cabbage, or potatoes about the house. Scatter bits of 

 camphor-gum about the plants. Strew a line of salt along 

 the edges of the bed. Lime dusted about the plants will 

 keep them away. 



Squash. BORER or ROOT-BORER (Melittia Ceto, Westw.). 

 Larva, boring into the root or crown of squashes and other 

 cucurbits. The moth flies only during the day, and lays its 

 eggs in various places upon the plant. 



Remedies. Catch the moths, which are an inch long 

 and blackish-brown with an olive-green lustre, as they 

 settle upon the leaves (near the base on the upper side) 

 at twilight. When the vines begin to run, cover the fourth 

 or remoter joints with earth, in order that they may take 

 root and help support the plant. 



Strawberry. CROWN-BORER ( Tyloderma Fragarice, Riley) . 

 White grub, one-fifth inch long, boring into the crown of 

 the plant in midsummer. The mature insect is a curculio 

 or weevil. 



Remedy. Burn over the field after the fruit is picked. 

 If this does not destroy the insects, dig up the plants and 

 burn them. 

 GRUB or MAY-BEETLE. See under MAY-BEETLE. 



