Tertiary Molluscan Faunas from the Southern Wairarapa. By L. C. King, M.Sc., F.G.S., Victoria University College, Wellington. [Read before the Wellington Philosophical Society, 9th September, 1931; received by the Editor, 6th November, 1931; issued separately, June, 1933.] Introduction. Though detailed descriptions of the faunas of fossil localities in the Southern Wairarapa have not been previously published, Wag-horn (1927) has recorded lists of fossils from the Ruakokopatuna Valley, S. Wairarapa, and Marwick has at various times described new species of mollusca from Hurupi Creek, Palliser Bay (N.Z.G.S. Locality 1037). Powell (1929) has also described Ellicea carinata from the cliffs east of Lake Ferry, Palliser Bay. The Tertiary rocks, as mapped by McKay (1879), strike northeast and dip consistently to the west. Along the north-east portion of Palliser Bay, Miocene rocks (Hurupi Creek Beds) overlie the greywacke basement, but, in the Ruakokopatuna Valley to the northeast, greensands and limestones of a somewhat younger (?) age rest directly upon the oldermass (Waghorn 1927, p. 230). Farther to the north-east a more complete sequence of Notocene rocks is present, and the basal members are probably even Cretaceous in age. A feature of this sequence is an immense thickness of unfossiliferous “papa” mudstones which underlie the fossiliferous limestones, brown sands, and mudstones of Pliocene age. Part of these unfossiliferous mudstones is no doubt equivalent in age to the Hurupi Creek beds of Palliser Bay, i.e., they may be correlated with the Tutamoe beds of the Gisborne Subdivision, which are also notably unfossiliferous. This has already been remarked by Henderson (1929, p. 281), who says: “The oldest Miocene rocks definitely identified by means of fossil collections are of Tutamoe age (Awa-moan), but some of the underlying mudstones, in which no fossils have as yet been found, are undoubtedly Hutchinsonian.” Hurupi Series. The Hurupi Creek Beds were described by McKay (1878, p. 19), and assigned to the Upper Miocene. Subsequently little descriptive work has been done, but the following authors have made brief reference to the beds:—McKay (1879, p. 81) = Lower Miocene (Pareora); Thomson (1919, p. 7) = Oamaruian, probably Awamoan; Marwick (1927, p. 576) = Mokau (Awamoan); Henderson (1929, p. 281) = Tutamoe (Awamoan); King (1930, p. 506) = Miocene; King (present paper) = Tutamoe (Awamoan). The beds outcrop along a considerable portion of the north-east coast of Palliser Bay and for about half a mile inland, good exposures being obtainable in the sea-cliffs and the ravines which traverse the ancient marine terrace. As all collections have proved remarkably uniform no zoning upon palaeontological evidence is attempted, and the fauna of the beds outcropping in the Hurupi Creek has been taken as typical of the whole. Apart from this type