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Volume 45, 1912
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– 294 –

Clavatula (Perrona) neozelanica sp. nov. Plate XII, fig. 3.

Shell rather large, fusiform, imperforate, with scalar spire, narrowly excavated shoulder, spirally lirate, with a somewhat shallow, broadly rounded labial sinus on the shoulder and extending over the keel. Sculpture of narrow spiral cords, flattish, separated by linear interstices, getting broader and more conspicuous upon the base; they are crossed by oblique fine growthlines. Spire conical, gradate, of the same height as the aperture without canal; angle 45°. Protoconch obtuse, slightly tilted. Whorls 6½, the last large and somewhat ventricose, with a rounded keel, narrow and concave shoulder above it, straight, flat below; the body-whorl flatly convex, contracted below. Suture well impressed, submargined below by a rather broad and but little raised convex band. Aperture vertical, pyriform, channelled above, produced below into a short canal, its base notched. Outer lip thin and sharp, with a sinus above. Columella vertical and almost straight, turned to the left towards the canal. Inner lip thin and narrow; an elevated rib descending towards the right side of the canal, and inside it is the distinct siphonal fasciole with laminate growth-periods.

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Fig. 1—Venericardia Ponderosa Suter.
Fig. 2—Terebra Orycta Suter
Fig. 3—Clavatula (Perrona) neozelanica Suter

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Fig. 1.
Fig. 2.

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Height, 60 mm.; diameter, 25 mm. (holotype).

Holotype in the Canterbury Museum, Christchurch.

Locality.—Lower gorge of Waipara, lower horizon (R. Speight). Miocene.

Remarks.—This is the first species of Clavatula recorded from New Zealand. It is very nearly allied to C. (Perrona) unisulcata Cossman, from the Pliocene of Karikal, French India, and, less so, to C. (Perrona) semimarginata Lamarck, from the Miocene of Bordeaux, France.