الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
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Snails and sluGs (snails ~~t~out external shells)
belong to the phylurr: ~ollusca, a group of animals ~~th
soft, unsegmented bodies. As members of the class Gastropoda,
they possess a distinct head w~th tentacles
and eyes, a ventral muscular foot, and a dorsal visceral
hump. A calcereous shell covers the visceral hump of a
snail and a tough,leathery skin known as the mantle covers
the viscera of a slug (~uick, 1960).
The land molluscs including snails and slugs are
considered of an economic importance among the a~imal
pests attacking different tj~es of plants. In recent
yeBls, the la..”’ld snails are becoT.ing serio~.;.s pest ir. Egypt,
iufesting nuwer~us agronomic, horticu~ture and orn~ental
plants. These animals cause serious reduction in
yield pr:;duc-oion of infested crops and fruits, as ·:;ell
c.s destroying plant seeC.lings (:;rowell, 1967; El-Okda,
1981). :Uand :wll uses c.ttack raw s·ucculent vegetable
soggy parts. liature of damc.ge was manifested
in chewing soft vegetative growth, flowers and fruits,
bes:.cie eating seeds, roo :s, a.”ld tubers after- sov;ing or
durine ripening stages.
The injured pl&”’lts may intensely recompate the damaged
parts and the yield of the crops seems not affected,