C. Warburton and G. H. F. Nuttall 
73 
Fig. 20. 
Figs. 19, 20. Boophilus decoloratus S . Raised in Cambridge from larvae received 
from S. Africa, x 30. The finely stippled areas on the dorsum indicate surface 
depressions or grooves. (G. H. F. N.) 
