Eleventh Keport of the State Entomologist 189 



height of the willows at different periods of growth, A pair of bent arms 

 like those of a plow are also attached at the rear for holding and guiding 

 the machine Its bottom is covered to a moderate depth with kerosene — 

 the too free movement of which is controlled by several transverse slats 

 forming compartments. A series of slats arranged in pairs like a gable- 

 roof with space between each pair to permit the beetles to fall into the 

 kerosene, are fastened in a frame which may be lifted out whenever the 

 accumulated beetles require removal. The slats prevent the willows as 

 they are pressed downward by the arms from coming in contact with the 

 kerosene. 



As the machine is drawn forward, the willows entering the ends of the 

 arms are brought nearer together in such a manner that before they are 

 released from beneath the arms, the beetles upon them are shaken upon 

 the slats and drop into the kerosene. A large proportion of the beetles 

 is gathered and killed by this method. It is found, however, that as they 

 drop to the ground at a moderate alarm, the passage of the horse between 

 the rows dislodges many of them. To obviate this, machines have been 

 made which are propelled by hand, having a wheel in front after the 

 manner of a wheelbarrow. Their use, however, has been found quite 

 laborious, but there seems to be no good reason why they may not be 

 made much less cumbersome. 



The machines above described, are represented, from photographs in 

 Plates V, VI, and VII. 



Galerucella luteola (Mijller). 



The Ebn-Leaf Beetle in Albany.'^ 



(Ord. Coleoptera: Fam. Chrysomelid^.) 



(Read before the Association of Economic Entomologists at its Springfield Meeting, 



August 28, 1895.) 



For more than a decade past, I have watched with interest the steady, 

 although slow, progress of this destructive insect northward along the 

 Hudson river valley. When it was first observed in the State of New 

 York, does not appear on record, but as early as 1879, the elms in New- 

 burgh, N. Y. (60 miles to the north of New York city), were nearly all 

 stripped of their foliage by " an insect new to that locality," which proved 



* Published in advance in the Proceedings of the Seventh Annual Meeting of tho Association of 

 Economic Entomologists, 1895, pp. 50-56. 



