Shell small, diameter between 0.3 and 0.5 mm, planispiral, more concave at one side, glossy, with uniform yellowish colour. Protoconch of 3/4 whorl, with early portion bearing 2 spiral cords, the external slightly serrated; the 2 spiral cords are fused to 1 prominent spiral cord on last half.
Teleoconch between 1 and 1 1/2 whorls, with three spiral cords, one at each side and the third at the periphery which is weakly angulated. There are narrow axial ridges which are more evident at the periphery, crossing the spiral cords and forming a small tubercle on the lateral ones. These axial ridges are not always regular and they are number between 20 to 30 the first whorl. There are growth striae between them with only very thin spiral striae. The aperture is circular. Etymology. The specific name refers to the apparent similarity with the European species.

Ammonicera familiaris sp. n. seems superficially similar to A fischeriana (Monterosato, 1869) in its sculpture. But the Mediterranean species has a cord of a brown colour on a cream base and less axial ridges and tubercles (12-16) on the first whorl, the tubercles of A familiaris sp. n. being less prominent. This species can be distinguished from A circumcirra sp. n. by its yellow colour while the latter has a brown coloured line on every side furthermore the latter has four evident grooves at the periphery.