76 LAND AND FRESH-WATER MOLLUSKS. 
the laterals similar, but the apex not so central ; 
the uncini are bidentated. 
It is abundant, and generally distributed in 
fields, gardens, and woods. In gardens it is a 
serious pest; its ravages among crops, as oats, 
peas, clover, and tares, are such as often to 
necessitate the resowing of the land. We give 
a recipe for a decoy for snails and slugs :—Warm 
cabbage leaves until they are quite soft; suffuse 
the hands slightly with unsalted greasy matter, 
pass the leaves one by one between the hands, 
so that some taint of grease may be transferred 
to the leaf. Lay the leaves in the haunts of the 
slugs, which will attract them to their destruc- 
tion. A few ducks, however, will be found to 
relieve one’s garden of these pests more effec- 
tually than such agencies. 
Timaz agrestis is unfortunately very prolific, 
producing several families in the course of a 
year; according to M. Bouchard, two indivi- 
duals have been observed to lay no fewer than 
380 eggs. A very subtle enemy is at work at 
a very early period of the slug’s life; for M. 
Laurent has found a fungus in the eggs, even 
before they are excluded from the parent. 
The field slug is somewhat carnivorous, and 
cannibal-like inclined. When irritated, it emits 
a thick milky slime, which, when dry, leaves a» 
white film: the nature of this slime and the 
