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Volume 72, 1942-43
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Columbariidae.

Coluzea aff. climacota (Suter).

1917. Fusinus climacotus Suter, N.Z.G.S., Pal. Bull. No. 5, p. 21. pl. 3, fig. 12.

1926. Coluzea, Finlay, Trans. N.Z. Inst., vol. 57, p. 407.

A large spire (26 mm.) from Hampden Beach (Bortonian) has only two, instead of three, primary spirals on the shoulder, with a weak interstitial. A small, imperfect specimen (22 mm.) from the same place has three weak spirals on the shoulder. The material is not good enough to make sure, but it suggests that the Hampden form is separable from climacota s.str.

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Figs. 1, 2.—Nuculana (Pseudoportlandia) tahuia n.sp. Holotype, × 2.
Fig. 3.—Ovaleda constricta n.sp. Holotype, × 2 ½.
Figs. 4, 6.—Nuculana (Jupiteria) hampdenensis n.sp. Holotype, × 6.
Fig. 5.—Poroleda antiqua n.sp Holotype, × 4.
Figs. 7, 10.—Lentipecten park n.sp. Paratypes, right valves, × 1.
Figs. 8, 11.—Kurnuia areolata (Marsh.) n.gen. Hampden, × 2.
Figs. 9, 12.—Lentipecten hochstetteri (Zitt.) Ears of right and left valves, × 1.
Fig. 13.—Lentipecten parki n.sp. Holotype, × 1.
Figs. 14, 15.—Bathyarca bellatula n.sp. Holotype × 10

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Fig. 16.—Maurca (Mucrinops) barbara n.sp. Holotype, × 3.
Figs. 17, 18.—Keilostoma malingi n.sp Holotype, × 3.
Figs. 19, 20.—Niso basiglobosa n.sp. Holotype, × 3.
Fig. 21.—Cirsotrema kuriensis n.sp. Holotype, × 2.
Fig. 22.—Zexilia hampdenensis n.sp. Holotype, × 2.
Figs. 23, 24.—Marama (Hina) vaga Marw. Holotype, × 1.
Fig. 25.—Galeodea geniculosa n.sp. Holotype, × 1 ½.
Fig. 26.—Dentahum centenniale n.sp. Holotype, 1 ½.

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Fig. 27.—Falsicolus altus (Marsh.). Hampden, × 1 ½.
Fig. 28.—Fascioplex neozelanica (Suter). Hampden, × 1 ½.
Fig. 29.—Compsomitra incisa n.gen., n.sp. Holotype, × 2 ½.
Fig. 30.—Fascioplex browni n.sp. Holotype. × 1 ½.
Fig. 31.—Friginatica haasti (Marw.). Hampden, × 2.
Fig. 32.—Fascioplex n.sp. Hampden, showing Muricoid sculpture, × 1.
Figs. 33. 34.—Priscoficus alectodens n.sp Holotype and paratype, × 1 ½.

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Dentalium centenniale n.sp. (Plate 24; Fig. 26.)

Shell of moderate size and thickness, rather slender, tapering only gradually, lightly curved. Apical part with 29 narrow but strong ribs rather uneven in strength, but all much narrower than the interspaces. As the shell grew, the ribs became relatively broader, so that anteriorly they are about equal in width to the interspaces. An interstital thread tends to appear in the interspaces, especially in the anterior third. Some of the earlier appearing of these became a good deal stronger. Growth lines are strongly marked throughout.

Length, 73 mm.; diameter (posterior), 2.2 mm.; (anterior), 7.5 mm.

Locality: Hampden Beach. (Bortonian.)

This Dentalium was collected at Hampden Beach (i.e., One-kakara) almost 100 years ago by Walter Mantell. (1850, Quart. Journ., vol. 6, p. 331, pl. 28, f. 15). Zittell (Novara Exp., Geol., vol. 1, pt. 2, p. 45) identified Hochstetter's Nelson specimens with the Hampden species and gave the name D. mantelli without, however, naming a type. Suter (1914, p. 32) accepted this identity, and stated that the type was in the “K.K. Hofmuseum, Vienna.” It is not clear whether this was an actual designation of type, or merely a statement based on the idea that Zittel's specimen was automatically the type. In any case, it is best taken as a designation of type. The Hampden shells, however, are easily distinguished by their narrow ribs and wide interspaces, so they deserve specific recognition.