60 



The imported elm leaf-beetle (Galerncella luteola) has been very abun- 

 dant on the English elm this season. Four large trees on the experi- 

 ment station grounds were almost completely defoliated. The larvae 

 came down the trunk in great numbers, but many climbed the trees 

 again. This upward movement was checked by bands of dendrolene 

 painted around the trees about 3 feet from the ground. The substance 

 did not seem to interfere with those that were coming down, as they 

 usually tumbled over it and buried themselves in the kainit which had 

 been scattered, at. Prof. H. J. Patterson's suggestion, around the base 

 of the trees, where they died by the myriads. 



The locust leaf-beetle (Odontota dorsalis) has this season almost com- 

 pletely defoliated the locusts of southern Maryland. The attack has 

 been very general along the Potomac Iiiver as far north as lower Prince 

 George County. It has been found much farther north, but not in such 

 great numbers. 



The paper was briefly discussed by two or three members. 

 Mr. Smith stated that the potato stalk-borer, which was so very 

 threatening in Xew Jersey two years ago, had caused no damage since. 

 Mr. Webster presented the following paper: 



INSECTS OF THE YEAR IN OHIO. 



By F. M. Webster, TVooster, Ohio. 



The outbreak of the year in this State was that of the chinch bug, 

 discussed in a separate paper, and perhaps the next in importance was 

 that of the army worm (Leuca nia unip u n eta Haw. ) . Though widespread, 

 the occurrence of this pest could hardly have been termed general, 

 and the injury caused was largely local. It is not often that both this 

 species and BJissus leucopterus occur together, but this season has seen 

 both destructively abundant over the same area and at about the same 

 time. To the peculiar meteorological conditions explained in my paper 

 on the last-named species may, I think, be attributed the causes for 

 this unusual phenomenon. Many of the worms received were para- 

 sitized, and a bacterial disease also prevailed. 



The cankerworm, Anisopteryx vernata Peck, occurred locally about 

 as the preceding species, and in some cases worked considerable injury. 

 I am at a loss to account for the contrary reports that have come to me 

 in regard to the inefficiency of spraying with Paris green in destroying 

 this pest. It must be that as the worms get older they are less sus- 

 ceptible to the effects of this poison, as reports of failures come too 

 often and from those who are too careful and reliable to admit of such 

 experiences being ignored. 



Considerable injury was done to grain and meadows in May and 

 June throughout some portions of the State by a grasshopper, Melano- 

 phis birittatus. In Wyandot County especially, the timothy and clover 



