Tue Insect FauNA OF THE GENUS CRATAEGUS 1087 
feeding on it was found on September 19, 1919, and these larvae spun 
cocoons on the ground on September 22 and 23. 
Sawfly No. 4 
A few larvae 24 centimeters long, with black heads and yellow bodies 
marked with black lines and dots, were found feeding on the foliage of 
C. pruinosa in July and August, 1918. They spun brown cocoons on top 
of the ground, in the cages. 
