Agatha georgiana (Hutton). (Fig. 3.) 1885. Odostomia georgiana Hutton, Trans. N.Z. Inst., vol. 17, p. 319, pl. 18, fig. 16. 1893. Odostomia georgiana Hutton, Macleay Mem. Vol., Plioc. Moll., p. 57, pl. 7, fig. 49. * The full synonymy is given in the Manual of N.Z. Mollusca, p. 335.1908. Odostomia bembix Suter, Trans. N.Z. Inst., vol. 40, p. 362, pl. 28, fig. 6. 1908. Odostomia inornata Suter, Trans. N.Z. Inst., vol. 40, p. 364, pl. 28, fig. 8; Man. N.Z. Moll., p. 338, pl. 16, fig. 22 (Atlas), 1913. 1913. Odostomia stygia Suter, Man. N.Z. Moll., p. 339, pl. 16, fig. 23 (Atlas); O. marginata Murdoch and Suter, Trans. N.Z. Inst., vol. 38, p. 296, pl. 25, fig. 37, 1905; not of C. B. Adams, 1852. 1915. Odostomia (Oceanida) georgiana Hutton, Suter, N.Z.G.S. Pal. Bull., no. 3, p. 15. Hutton's drawing is of little use; it shows the spire too attenuate posteriorly, the body-whorl too full over the base, and it does not represent the aperture precisely. His description is meagre, and his statement that the shell lacks spiral sculpture is incorrect; this error Suter rectified (1915) in re-describing the species at greater length. Suter's reference to Oceanida must be negatived. The holotype has several naturally repaired fractures, and these apparently Suter mistook for varices. Further, Oceanida lacks spiral ornamentation. Protoconch small, heterostrophic, coiled in a low helicoid spiral; nucleus small, about two-thirds immersed on an average, but degree of immersion slightly variable. Height, 14·5 mm.; width, 6·0 mm. (holotype). Localities: Castlecliff, Wanganui (Castlecliffian), type; Eskdale, Petane ((Nukumaruan); Nukumaru; junction Ruakakapatuna and Makara Streams, South Wairarapa (Pliocene); Awanui Heads, in 12 fathoms; Dunedin Harbour; Poor Knights, in 60 fathoms (juvenile); Auckland Harbour; Stewart Island; off Otago Heads, in 50 fathoms. Type and four paratypes in Canterbury Museum, Christchurch. Finlay (Trans. N.Z. Inst., vol. 57, p. 405; 1926) has stated that O. bembix Suter is a synonym of O. georgiana Hutton, and comparison of the types confirms this conclusion. The same writer (loc. cit., p. 405) stated his belief that possibly O. stygia Suter is also a synonym of georgiana, but refrained from uniting them as he had not seen the type of stygia. Comparison of the holotypes substantiates Finlay's suspicion that these two forms are conspecific. The holotype of stygia is not adult. O. inornata Suter from Snares Islands must also fall in synonymy to georgiana Hutton. The holotype of inornata is a little more attenuate than typical georgiana and it has a weaker plait on the pillar, but the half-dozen paratypes show these features to be inconstant, and they approach very closely indeed to undoubted specimens of georgiana from off Otago Heads. Suter is incorrect in his statement (key to species, Manual, p. 334) that there is no spiral sculpture. The type has its surface poorly preserved, but good paratypes show fine but distinct microscopic spirals.