980 I. M. Hawuey ; 
alcoholic beverages. They will crawl into beehives and feed on the honey, 
apparently immune to the stings of their enraged hosts (Reh, 1913). 
ECONOMIC IMPORTANCE 
In wet years the field gray slug is one of the two most destructive animal 
pests of field beans in New York. During the rainy summers of 1916 and 
1917, nearly all of the plants in some fields were atta¢ked and many were 
entirely destroyed. Estimates of the losses on twenty-one farms in 
Orleans County in 1917 varied between 5 and 70 per cent. In 1918 the 
writer saw a bean field in Monroe County in which about: one-third of a 
ten-acre field was so badly attacked that not a trace of a plant was left 
above ground. ~ 
In addition to its attacks on field beans, the slug often causes ntieh 
injury to garden beans, lettuce, cabbage, peas, potatoes, radishes, and 
strawberries. As the species becomes better established in the farms and 
gardens in new localities thruout New York, it is probable that more 
widespread attacks may be expected on crops during wet seasons. 
NATURE OF THE. INJURY TO BEANS ; 
Immature specimens of Agriolimax agrestis eat the tender tissue between 
the veins and the veinlets of the leaves, thus giving them a skeletonized 
Fia. 91. INJURIES CAUSED BY AGRIOLIMAX AGRESTIS : 
A, A bean pod showing a hole made by the slug in feeding. _B, Bean plants injured by slugs. (Photo- 
graphed in midsummer.) , Bean plants that were injured by slugs soon after they appeared above 
ground, photographed at harvest time. 
