32 MYLLOCERUS SP. 

outside edge. The portions eaten out are either circular or 
irregular in shape, and sometimes the midrib is reached, but 
this was rarely touched by the insect. The leaf was more often 
eaten irregularly away on both sides of the midrib, leaving the 
latter intact. 
As this beetle affects the old leaves as well as probably the 
new, it is capable of doing serious defoliating injury to the 
trees when swarming in numbers. 
Points in the life history requiring further observation. 
1. Where the eggs are laid and their number. 
2. Where the larva passes its existence, the nature of 
its food, and time spent in the larval stage, 
3. Length of time spent in the pupal stage. 
4. Number of generations passed through in the year. 
