NOTES OF OBSERVATIONS 



OF 



INJUEIOUS INSECTS 



AND 



COMMON CKOP PESTS 



DURING 



1899. 



CABBAGE. 



CABBAGE BUTTERFLIES — Large White, Pieris brassicm, Linn. 

 Small White, Pieris rupee, Linn. Green-veined White, 

 Pieris napi, Linn. 



Pieris brassicm. — 1, female butterfly ; 2, eggs ; 3, caterpillar ; 4, chrysalis. 



The past season, and also the summer of the preceding year (1898), 

 have both been noticeable for the great prevalence of Cabbage butter- 

 flies in various localities. In 1898 the devastation of the caterpillars 

 in some places completely ruined the Cabbage crops. The leaves were 

 eaten to mere shreds, consisting of only the mid-rib and some amount 

 of side veins ; and even if the plants were not killed, such growth as 

 the remnants of life left in them enabled them to make was delayed 



B 



