sub-sutural fold. Body whorl broadly angled on the base, contracting rapidly below the angle to a moderately long tapered columella. Judged from growth lines, sinus moderately deep, U-shaped, occupying most of the shoulder, and stromboid notch not present. Sculpture, brephic axials slightly arcuate, concave to the left, reaching both sutures but widest and highest at the peripheral carina where from the beginning they are rendered slightly tuberculate by a narrow spiral cord; axials stopped at the sub-sutural fold on third whorl and hardly encroaching on the shoulder on the body whorl where they extend downwards to just below the basal angle. Spirals consist of low rounded distant cords crossing the axial ribs and interspaces; some distant threads on the neck and anterior fasciole. Shoulder smooth except for growth lines, which are faint over most of shell, raised to weak ridges on the anterior fasciole.

This genus appears to be related to the group discussed under the heading of Pseudoinquisitor flemingi n.sp., but is distinguished by the basal angle.

Maoricrassus carinatus n.sp (Pl. 27, fig. 21.)

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Small, with pagodiform spire about 1 1/2 times the height of the aperture plus canal; 6 whorls including protoconch. Sculpture, 11 strong, straight, oblique axial folds rather sharply crested and tuberculate at the peripheral keel. Two obscure spiral cords appear below the keel on penultimate whorl, the lowest immediately above the suture. On body whorl 4 distant cords below the peripheral keel the third from above situated on the base angle and the strongest.

On remainder of base and neck 8 fine widely spaced threads, closer on neck. Inner lip thin bounded by an incised line, without a callus pad beside the posterior sinus.

Height, 6·3 mm.; diameter, 3·3 mm.

Locality: N165/507, Bell's Creek, middle Tongaporutuan; (holotype and one paratype consisting of spire whorls only).

The paratype has the spirals better developed, the first below the periphery appearing on the penepenultimate whorl.

Awateria miocenica n.sp. (Pl. 27, fig. 28.)

Similar in outline to A. streptophora Suter, but larger, narrower, with longer anterior canal. Spire lightly convex in outline, a little higher than aperture plus canal. Protoconch and earliest whorls missing in all specimens; 5 whorls preserved in holotype. Subsutural cord strong, not moniliform, bearing a spiral groove which is not present in some paratypes. Shoulder narrow, with 2 spiral cords with linear interspace. Axial ribs narrow, sharply crested but not high, slightly oblique, 11 a whorl, on body tapering over base and dying out before reaching the neck. Spiral sculpture, on spire whorls 3 flattened cords with equal interspaces, each with a weak interstitial thread; on body whorl 18 cords, narrower and more rounded on base and neck, lowest 8 closer spaced and without interstitials. Growth lines prominent over entire shell.

Height, 11·4 mm.; diameter, 5·2 mm.

Locality: N165/507, Bell's Creek, middle Tongaporutuan (holotype and 14 paratypes).

Awateria striata n.sp. (Pl. 25, fig. 2.)

Closely related to A. miocenica n.sp., but broader, with less elevated spire, and less prominent sub-sutural keel. 11 axials on penultimate whorl, 12 on body.