BOOT CROPS. 



69 



also grey. The fore wings, thorax, and abdomen of the 

 female are brown, while the hind wings are white. 



Prevention. — (1) " Generous culture, clean boundaries, 

 strong-growing seeds will keep down the ' turnip moths.' " 

 (2) The rook, partridge, jackdaw, raven, chiff-chaff, mag- 

 pie, blue-tit, redstart, and crow, all destroy the larvae of 

 these and similar farm pests. 



Cure. — Gas-lime, tobacco-water, lime, soot, and hand- 



Pig. 29. — TuKNiP Saw-Plt {Atlialia spinarum). 



A. Turnip Saw-My (enlarged slightly). 



B. LarvsB feeding upon turnip leaf. 

 0. A portion of the aaw-like organ. 



picking are remedies not difficult to apply ; although they 

 add to the cost of cultivating turnip crops. 



The Turnip Saw-Fly {Athalia spinarum, Fig. 29) 

 belongs to a family of insects distinguished by the peculiar 



