Pontiothauma
''Pontiothauma'' is a genus of sea snails, marine gastropod mollusks in the family (biology), family Raphitomidae. Description The fusiform shell is not umbilicate, anteriorly rostrate and obliquely folded, It is spirally furrowed by lirae. The Aperture (mollusc), aperture ends in a short siphonal canal. The simple Columella (gastropod), columella is not folded. The outer Lip (gastropod), lip is thin, posteriorly wide but not deeply sinuate. The shell lacks an Operculum (gastropod), operculum. The enormously expanded rostrum, and the absence of eyes, radula, and operculum, at once separate this genus from any which it approaches in shell-character. Species Species within the genus ''Pontiothauma'' include: * ''Pontiothauma abyssicola'' Smith E. A., 1895 * ''Pontiothauma minus'' Smith E. A., 1906 * ''Pontiothauma mirabile'' Smith E. A., 1895 * ''Pontiothauma pacei'' Smith E. A., 1906 ;Species brought into synonymy: * ''Pontiothauma ergata'' Hedley, 1916: synonym of ''Belaturricul ...
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