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Turbonilla ambulatia (Laseron, 1951) Description: Shell medium size for genus, up to 7 teleoconch whorls. Protoconch coiled (Type B), of about 2 whorls, set on teleoconch with axis inclined at about 110° to teleoconch axis. Teleoconch whorls turreted, sculptured with about 12 strong, widely spaced, axial folds, on last whorl terminating level with top of aperture; no spiral sculpture. Aperture wide, columella without plaits. Shell opaque white. Size: Up to 4 mm in length. Distribution: Endemic to Australia: Port Stephens, NSW, southwards to Sydney. Habitat: Only 7 lots in Australian Museum collection. One dredged from 5–13 m, rest from beach washup. Rare. Fig. 1: Long Reef, Collaroy, NSW (C.105379 HOLOTYPE). Photo Australian Museum. |
