Observations on Insects affecting the Turnip Crops. 3*21 



The third species is the " Rajje-seed " or '' Green- veined Wltite- 

 butterfly,'" which also lays its ej^gs singly on Cabba2:es, Turnips, 

 &c. ■ 



These caterpillars eat into the central leaves of the Cabbages, 

 and did great mischief last year. 



Of all these Butterflies, there are two broods ammcdly, one in 

 spring, the other in summer. 



A little Ichneumon, called Hemiteles melanariiis, infests and 

 destroys the Chrysalides. 



To get rid of the Cabbage-caterpillars, look for and destroy the 

 chrysalides in winter ; in the spring crush the clusters of eyas, 

 hand-pick the caterpillars, and catch the butterflies in the garden. 



In seed crops shake the stems, and let in troops of Ducks to 

 pick up the caterpillars as they fall down. 



Hellebore-powder recommended to destroy them. 

 WasjJS destroy many insects, and amongst others the iVhlte 

 Cabbage-butterflies. 



The caterpillar of a small moth lives in the footstalks of the 

 Turnip-leaves. 



The leaves are often eaten by the small black larva of a beetle, 

 Chrysomela Betid <b ? 



A small maggot lives in the jjods of the Turnip, eating the 

 seeds ; when full fed it eats its way out of the pod, and changes 

 in the earth to a pupa, from which comes the Weevil called 

 Curculio assimilis, which inhabits the flowers of the Turnip, 

 Cabbage, &c. 



Another Weevil, the Curculio contractus, punctures the Tur- 

 nip-leaves to a great extent. 



These small beetles may be collected by shaking the flowers 

 over a cloth or bag-net. 



The Green Rose-chafer seriously injures Turnip-flowers, by 

 devouring the anthers, and rendering the germen abortive. 



The eggs are laid in the ground, where they become maggots, 

 and live three years in that state. 



The conspicuous Green Rose-chafer should be collected by 

 hand-picking, and killed with boiling water. 



Instructions for making a Bag-net to catch insects. 



Explanation of the Plates. 



Fig. 1. The White Cabbage-butterfly at rest. 

 Fig. 2.*The head in profile. 



a. The two palpi or feelers. 



b. The spiral tongue or proboscis. 



Fig. 3. A cluster of the eggs on the under side of a leaf. 



