No. 123.] REPORT OF THE ENTOMOLOGIST. 93 



By the 6th of August the work of these insects had reached 

 its climax, and many had left the trees and were entering 

 the ground to pupate. On the base of one tree where the 

 caterpillars were rather more abundant than usual, 81 were 

 counted in a space a foot square; and while this was more than 

 the average for such locations, it was by no means the densest 

 congregation of the caterpillars which was observed. 



Enemies of the insect were abundant and actively attacked 

 the caterpillars. The predaceous beetle {Calosoma frigidum 

 Kirby) and the bug (Podisvs modestiis Dall.) were both seen 

 feeding on the larvae, and numerous parasitic flies were actively 

 buzzing around them, but were not observed in the process of 

 actual attack. 



Many trees appeared to be dead, and while it is probable 

 that some will recover, others are probably lost. Where trees 

 were stripped in 1917 they were undoubtedly in a weakened 

 condition when the severe winter followed, and these two 

 factors together may have left them unable to live longer. 

 Others which survived and were stripped again this year may 

 now find this to be more than they can resist and may die 

 also. Certainly in some of the "sugar bushes," the loss of 

 trees will be quite heavy, particularly with those which have 

 passed their prime, but, as a whole, the loss of a large part 

 of the beeches and maples in the infested territory is not 

 probable. • 



Whether the Saddled Prominent will reappear in 1919 

 cannot now be foretold. In Maine a somewhat similar out- 

 break lasted three years, though it was less serious the third 

 summer, and the fourth year hardly a specimen of the insect 

 could be found. From the abundance of enemies of the 

 Prominent observed this year, the prospect for at least a 

 reduction in its numbers next summer would appear probable. 



The striped maple worm {Anisota nihicunda Fab.) was quite 

 abundant along with the Saddled Prominent in many places, 

 but hardly ranked as a serious pest. 



About the last of July the cabbage butterfly {Pontia rapes 

 L.) was extremely abundant, and in September its caterpillars 

 — the green cabbage worms — were more numerous than the 

 writer has ever before observed them in Massachusetts. If 



