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Haecker

Diagnosis: Shell balloon-shaped, with strongly arched aboral and gradually tapered oral halves. Aboral surface drawn out in a gradual curve into the very strong basal cone of the apical spine. Peristome in shape of short, wide tube, widened at the opening, with well-developed, basket-shaped peristomal termination. Three very long (to twice shell length) oral spines. Single apical spine, twice shell length.

Length: 2.8-3.0 mm.

Tuscarantha luciae