556 Report op Entomologists of the 



matiou soon takes place, the pupse being retained in the old larval 

 skins. Fig 3 is from a photograph, natural size, of a number of the 

 empty pupa cases as thej remain attached to the twig or leaf. 

 This stage lasts about ten days. 



During the time that this first brood is maturing, the willows are 

 said to grow, under favorable circumstances, about one inch per 

 day. As soon as the beetles come forth, however, they begin to 

 feed on the new growth, thus causing the injury above mentioned. 



There are said to be three annual broods of these beetles in this 

 State. They may be found on the willows at Liverpool continu- 

 ously until about the first of August and frequently somewhat later. 



Some of the mature beetles hibernate, thus continuing the brood 

 over winter. During this time they may usually be found under 

 any convienent debris. 



This insect is widely distributed in the United States. In the 

 American Entomologist, Yol. Ill, p. 159, Dr. Riley states that the 

 beetle is found in abundance " infesting the leaves of the cotton- 

 wood and other species of Populus and of willows throughout the 

 west to Colorado and south to Louisiana," This beetle is scien- 

 tiiically known as Lina scripta, Fab. 



Remedies. 



London purple and Paris green are the remedies most commonly 

 recommended for this insect. Either one may be used. London 

 purple is somewhat cheaper and remains in suspension in water 

 longer than Paris green. In either case lime should be added to 

 prevent burning the foliage by the free arsenic which is dissolved 

 by the water. The lime should be added in the form of milk of 

 lime. One poimd of poison to 150 gallons of water is considered 

 strong enough for insects of this kind. 



Mr. Kennedy tells me that although he and some of his neighbors 

 sprayed thoroughly and persistently with Paris green they were 

 unable to keep the insects in check. This was undoubtedly largely 

 due to the fact that the mixture does not stick readily to the 

 smooth surface of the willow leaf. This defect may be in part 

 overcome by adding glucose or molasses to the mixture using about 

 one quart to 150 gallons of water. 



Arsenate of lead is another insecticide which may prove effectual 

 against this insect. It has been extensively experimented with by 



