INSECTS, ETC. 



175 



prevent injuiy. If the ground be dressed with one of the 

 soil fumigants this pest will not prove very troublesome. 



Radish Fly (Anthomyia radicum). — The larviie of this 

 fly, which are yellowish-white in colour, fleshy and 

 wrinkled in their bodies, legless, pointed in front and 

 blunt behind, attack the roots of the radish and cause 

 them to rot. Fortunately, they are not very numerous. 

 The larvoo of other species of the same genus also feed on 

 the root« oi radishes. 



ST. MARK'S FLY {ULA^i}, LAliXA, AND I'LTA). 



Eemedies. — Where the crop is known to be attacked 

 water the soil once! a week with the following solution: 

 Add a quarter of a pint of crude carbolic acid and a quart 

 of soft soap to a gallon of boiling water. Mix thoroughly, 

 then add this to 25 gallons of water. Dress the ground 

 also with one of the soil fumigants. 



Root Aphis (Trama troglodytes).— This is a 3-ellowish- 

 white, transparent insect, with a hairy body and a woolly 



