138 Observations on Insects affecting the Turnip-Crops. 
Fig. 13. The case of earth which the surface-grub forms in the ground. 
Fig. 14. The chrysalis contained in it. 
Fig. 15. A turnip-bulb atiected by galls. 
Fig. 16. A small gall, or knob, unopened. 
Fig. 17. A large one cut open, showing several cavities in which the 
maggots had fed ; one of them remaining. 
Fig. 18,* The same maggot taken out. 
c The natural dimensions. 
Fig. 19.* The weevil which causes these galls. 
d The natural size. 
Fig. 20.* The fore-leg of the turnip-gall weevil. 
e The J emur, or thigh. 
/ The tooth. 
g The tibia, or shank. 
h The tarsus, or foot. 
Fig. 21. A turnip affected by anbury. 
Fig. 22. A solid excrescence formed on one of the fibres. 
Fig. 23. Ditto, more granulated. 
Fig. 24. The rotten tap-root. 
Fig. 25. Maggots living in ditto. 
Fig. 26.* Ditto, taken out and magnified. 
p The natural size. 
Fig. 27.* The winter-turnip gnat. 
i The natural dimensions. 
Fig. 28.* The larva of the sculptured rove-beetle. 
k The natural size. 
q* 'J he head, showing the jaws, horns, &c. 
Fig. 29.* The sculptured rove-beetle. 
/ The natural length. 
Fig. 30.* A maggot of the turnip-root fly. 
m The natural size. 
Fig. 31.* Pupa of the same. 
n The natural size. 
Fig. 32.* The male turnip-root fly. 
Fig. 33.* The female ditto. 
0 The natural dimensions of the sexes. 
Fig. 34. A yoimg turnip-root eaten by maggots and rove-beetles. 
Fig. 35. One of the maggots. 
Fig. 36.* The same magnified. 
Ohs. All the figures are drawn from nature, excepting No. 2 ; and the 
above numbers with a * attached indicate that the objects referred to 
are represented much larger than life. 
London, Oct., 1842. 
[The copyright of this Paper is reserved by the Writer.] 
