468 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 5 



end of the State and also along the lower part of the Ohio River. I 

 found it very common early last spring in Daviess County near the 

 Ohio River. Horses working in the fields were so worried by the at- 

 tacks that it was necessary to apply a mixture of lard and coal oil to 

 keep it away. It is said to have been very much more common in 

 this region in early days when more woodland was present. It is a 

 serious pest still at times. 



The bag worm {Thyridopteryx ephemeroeformis) is a conspicuous 

 Kentucky insect. At times it overruns our deciduous trees, though 

 when least abundant it is commonly restricted to cedars and other 

 evergreens. I have seen it in large numbers on the trees about the 

 campus of this University, so that it became a YQvy severe drain upon 

 their vitality. Its parasites then appeared in immense numbers and 

 now seem to have all but exterminated it. I have seen very few of 

 them for several years. Trees formerly with large numbers of the 

 sacks hanging from the twigs are now entirely free. 



For a number of years I have been watching" the movements of the 

 monarch butterfly {Anosia plexippus). In September and early Octo- 

 ber it begins to move southward through Kentucky, coming to us 

 from Michigan and Ohio, and as I write at my desk on sunny days 

 during this period a constant succession of individuals is to be seen 

 moving past my window and over the building. A careful study of 

 the movements of the insect would afford facts of interest to ento- 

 mologists. It is as regular in its migrations as are some of the war- 

 blers among the birds. On several occasions I have seen it moving 

 southward along the shores of Lake Michigan in early September. 



I will mention just two other insects, though many others have 

 attracted my attention in one way or another during the season. The 

 black locust is a very common tree in Kentucky. It is frequently 

 seen in woodland pastures and is sometimes planted along the road- 

 sides for shade. At times it is severely damaged by leaf-miners, among 

 which the small yellow beetle with black back {Odontota dorsalis) is 

 noticeable. This insect places a cluster of eggs on the leaves, from 

 w^hich its flat larvae hatch and push into the interior, often occupying 

 all of the leaflet attacked. In August the trees are frequently ren- 

 dered completely brown bj^ this insect, working with several Tineid 

 leaf-miners. Quite frequently the trees over whole counties are em- 

 browned at this season of the year and look as if they had been singed 

 by fire. The injury was very noticeable in Fayette and Clark coun- 

 ties this year. 



Among the most reliable Kentucky fruits are the different varieties 

 of grapes of American origin. They are sometimes badly damaged 

 by insects. This j^ear, locally, the grape berry moth {Polychrosis 



