Shell thin, slender, elongated oval, sculptured with spiral striations. Aperture narrow posteriorly and dilated anteriorly, projecting beyond the apex and base. Outer lip thin, folded above apex and raising from its centre. Columella sinuous, slightly plicate, and reflected over a small umbilicus.
The soft parts are unknown, but the animal in other species of this genus is similar to that described for Acteocina.
fulvous or yellowish, encircled by one or two pale brown bands. There is also sometimes a wide white band.
common size :
2.5-3 mm, max. 5 mm.
A distinctive pale band over a brownish or a yellowish ground body color clearly differentiates this species from other similar Mediterranean species of the genera Cylichna and Cylichnina. Juveniles of the native Bulla striata are similar, but have a more difuminated color pattern, not a definite spiral band.
BIOLOGY / ECOLOGY
Unknown. Other species of the family feed upon foraminiferans or minute molluscs.
in the Mediterranean, Cylichnina girardi has been found in shallow sandy bottoms among Posidonia oceanica meadows and lagoons.