FAMILY:

GENUS:

SPECIES:

Enlarged x 10

Coiled umbilicus, planar with strong ribbing.

2425

24 and 25 differ in the shape of the whorls (rounded and angular), the apertures and the size of the smooth protoconches. In No 25 the whorls are more rapidly increasing.

26The smooth protoconch and following two whorls is a distinctive type found at North Gosford (note 31). The ribs are distinct in this type and widely spaced. The shell is almost completely planar.

Return