114 
Ganl. Bull. Singapore 70 (Suppl. 1) 2018 
in the forest indicating that this species may have already established a population 
within Nee Soon. 
Family SUBULINIDAE 
Lamellaxis gracilis (Hutton, 1834), Fig. 2E 
Lamellaxis gracilis is an introduced species found on the outskirts of Nee Soon 
freshwater swamp forest. It is likely to have spread from nearby plant nurseries and 
gardens. Although the species is easily confused with Subulina octona, it can be 
identified by its more slender shell shape and its columella is not truncated (Tan et al., 
2012 ). 
Family DYAKIIDAE 
Dyakia kintana (de Morgan, 1885), Fig. 2F 
Dyakia kintana is mostly found in undisturbed forest. It can be easily recognised by 
its sinistral coiled shell and the animal’s body ranges from pink to white in colour 
with two black stripes. The periphery of the shell is acutely keeled. It has only been 
observed on the ground, hiding among leaf litter and fallen timber. 
Quantula striata (Gray, 1834), Fig. 2G 
Quantula striata is found commonly in urban areas as well as in the forest. Most of 
the specimens were observed in the outskirts of Nee Soon in close proximity to urban 
areas. Its shell colour is known to be variable (Tan et al., 2012); however only reddish 
brown examples were observed in Nee Soon freshwater swamp forest. 
Family EUCONULIDAE 
Coneuplecta microconus (Mousson, 1865), Fig. 2H 
Coneuplecta microconus is a very tiny snail that was found near the outskirts of Nee 
Soon. The shell is conical in shape but unlike Liardetia convexoconica the periphery 
is acutely keeled. 
Liardetia convexoconica (Moellendorff, 1897), Fig. 21 
Liardetia convexoconica is the most abundant species found in Nee Soon freshwater 
swamp forest. The shell is conical in shape and ranges from light brown to yellow 
in colour. The animal’s body is yellow in colour with a tint of red on its head. It is 
arboreal and mostly found in shaded areas, hidden underneath the leaves. 
Liardetia doliolum (Pfeiffer, 1846), Fig. 2J 
Liardetia doliolum is a common species that can be found in both forested and urban 
