Vertical and horizontal dispersals of the land snail Eobania vermiculata(Müller, 1774) were investigated in citrus orchards cultivated with navel orange surrounded with casuarina trees at Inshas locality, Belbies district, Sharkia Governorate during the growing season 2014\2015. Results revealed that in vertical distribution, the population density of snails decreased by increasing distances on navel orange trees. Spring season harbored the highest population densities followed by summer and winter. Regarding vertical distribution on casuarina trees, it was noticed that summer season has the highest population densities followed by spring and winter. The same trend was observed for the three levels where population densities decreased by increasing high distances on casuarina trees. Regarding, horizontal distribution on navel orange trees, it was noticed that population density slightly decreased by increasing distances from the adjacent orchards for the growing seasons. Population density of the snails didn't clearly differ during the three growing seasons.