part of body-whorl covered with smooth, moderate callus, middle zone of body-whorl with growth-lines only, separated from basal limb by a comparatively narrow depression; aperture slightly oblique, oval, deeply notched below; outer lip convex, thickened above but thin below and with denticle opposite spiral depression; columella slightly concave, truncated below; inner lip calloused, with pad extending over parietal wall and nearly to protoconch. Holotype in collection of the New Zealand Geological Survey. Height, 16.5 mm.; diameter, 11 mm. Locality.—1104, “Fossil Creek,” west of Cottage Road, Maraekakaho. Remarks.—This species was confused by Suter with A. depressa (Sowerby) because of its squatness, but it is comparatively much broader than that species. Marginella (Glabrella) brevespira n. sp. (Plate 17, fig. 6.) Shell relatively large, oval; spire inconspicuous; protoconch a large flattened dome; whorls 3 besides protoconch, with flat outlines on spire, but body-whorl plump and inflated; sculpture none, surface smooth and shining; aperture long, slightly wider below; outer lip thickened, varix ascending to top of penultimate whorl, inside obsoletely toothed; columella with 4 strong oblique folds, the lower two more oblique than the upper. Holotype in collection of the New Zealand Geological Survey. Height, 10 mm.; diameter, 5 mm. Locality.—Sandy beds in blue clays below limestone, three miles above mouth of Maraekakaho Creek. Remarks.—This shell is closely related to M. kirki Marwick, but may be distinguished by the plump convex outline of the body-whorl and the very short spire with flat sides. Mangilia morgani n. sp. (Plate 17, fig. 14.) Shell of moderate size, fusiform; spire slightly higher than aperture and canal; whorls 7, convex, protoconch broken off, later whorls with short sloping shoulder and blunt angle, base gradually contracted; sculpture of strong axial ribs and wide interstices passing from suture to suture, increasing from 8 to 12 on spire-whorls, becoming shorter and finally dying out on body, last seen on shoulder; spiral striae obsolete, sometimes more distinct on base; aperture ovate, produced below into short wide canal not notched anteriorly; outer lip expanded, with shallow sinus between shoulder-angle and suture; columella straight, with 2 insignificant folds; inner lip thin. Holotype in collection of the New Zealand Geological Survey. Height, 17 mm.; diameter, 8 mm. (a paratype is 19 mm. by 8 mm.). Locality.—1063, shell-bed, Okawa Creek, Ngaruroro River. Literature Cited. Cossmann, M., 1895. Essais de Paléoconchologie comparée, vol. 1. —— 1903. Ibid., vol. 5. Cossmann et Peyrot, 1912. Conchologie Néogénique de l'Aquitaine, t. 2, livr. 1, p. 81. Dall, W. H., 1903. Trans. Wag. Free Inst. Science, vol. 3, pt. 6. Gould, A. A., 1852. Mollusca and Shells of the U.S. Exploring Expedition, 1838–42. Iredale, T., 1915. Commentary on Suter's Manual of the New Zealand Mollusca, Trans. N.Z. Inst., vol. 47. Marshall and Murdoch, 1920. Tertiary Rocks near Wanganui, Trans. N.Z. Inst., vol. 52. Suter, H., 1906. Notes on New Zealand Mollusca, Trans. N.Z. Inst., vol. 38.