DIALOGUE XXVIT. 
TENTHREDO, OR SAWoFLY. T. CAPRE^. 
VITELLINiE. T. ROS^E. FALSE CATER- 
PILLARS. 
MOTHER. What subject are we to 
have for this morning's conversation, 
Lucy ? 
Lucy, The flies that belong to the 
order hymenoptera. 
Mother. We shall begin then with 
the saw Jlij^ or tenthredo. 
Lucy. Why is it called saw fly ? 
Mother. Because it is furnished with 
a minute saw, with which it makes an 
incision in the l)ark of trees, and there 
deposits its eggs, 
Lucy. What trees do they live upon r 
Mother, On pear trees, willows, sal- 
