Terrestrial molluscs of Cabo Delgado and adjacent inland areas of north-eastern Mozambique Author Muratov, Igor V. text African Invertebrates 2010 2010-12-31 51 2 255 255 http://www.bioone.org/doi/abs/10.5733/afin.051.0203 journal article 10.5733/afin.051.0203 2305-2562 7913493 Achatina immaculata Lamarck, 1823 Figs 19 , 59 Achatina immaculata : Lamarck 1822: 128 (height c . 152 mm ). A common, widespread eastern African species. Found at five stations inland and at one station on Cabo Delgado . Differs from all other species in the area by its large size (shell up to 200× 120 mm ). Fresh shells differ from the similar most common A. fulica Bowdich, 1822 (not found in north-eastern Mozambique so far) by the pink columellar margin. Juvenile shells are even more common and can easily be separated from all other shells in the region by the large smooth protoconch.