THE 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 2J 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. 



