Anacithara querna
Anacithara querna is a species of sea snail, a marine gastropod mollusk in the family Horaiclavidae.[1] Description(Original description) The length of the shell attains 5.5 mm, its diameter 2 mm. A thickened pale brown or straw-coloured shell with few ribs, the number only extending to nine on the body whorl. Altogether it is seven-whorled, two of these being apical. The outer lip is thickened. No trace of sinus is perceptible. The columella is straight. The siphonal canal is very short.[2] DistributionThis marine species occurs off Iran References
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