Cavolinia tridentata australis, Peron, 1807
Hyalaea australis (non d'Orbigny, 1836), Peron, 1807;
Hyalaea truncata (non Lesueur, 1821), Krauss, 1848;
Hyalaea teniobranchia, Freyer, 1869;
Cavolinia tridentata forma kraussi, van der Spoel, 1967.
Hyalaea australis (non d'Orbigny, 1836), Peron, 1807;
Hyalaea truncata (non Lesueur, 1821), Krauss, 1848;
Hyalaea teniobranchia, Freyer, 1869;
Cavolinia tridentata forma kraussi, van der Spoel, 1967.
Between 10.5mm and 16.0mm in length. Between 8.0mm and 10.5mm in width. [van der Spoel, 1976]
Epipelagic [Peron, 1807]
Type Locality: Vals Bay, South Africa. [Peron, 1807]
Distribution: Found only in subantarctic waters of Atlantic, Indian, and Pacific Oceans. [van der Spoel, 1976]
Dorsal side is slightly vaulted with three well developed dorsal ribs and two less developed ribs on lateral side. Upper lip is strongly truncated showing two anterior projections. Lateral sides provided with strong side keels. Caudal spine is straight. Strongly vaulted central side. Shell aperture is trapezoid in shape. Transverse ribs ranging from coarse to faintly developed along with growth lines comprising shell structure. [van der Spoel, 1976]