crossing it, and with two weak spiral threads close above angle. Suture margined below by moniliform swollen band. Below angle there are two incised spiral lines situated nearer to the angle than to the suture. Below these on the body-whorl there is a broad, unsculptured zone. reaching anteriorly to below level of posterior of outer lip. Anterior to this zone spirals begin to develop again at first as incised lines, later, as the grooves open out, assuming the form of broad ribs. Sinus on shoulder, not deep. Height: 7.0 mm.; width: 4.0 mm. Nearest to A. personata Powell (Opoitian), but with fewer axials, which are not crisp as in personata, and though slightly oblique, cannot, be described as arcuate. Awateria experta n.sp. (Plate 55, Fig. 8.) Shell small, narrowly biconic, height of spire about, one-half that of aperture. Distinguished from the foregoing species, which it closely resembles in sculpture, by slenderer habit, possession of 5 or 6 distinct spiral threads on shoulder, absence of smooth zone on body, and fewer (only 13) tubercles on body-whorl. There are about 15 distinct primary spiral cords on body-whorl, separated by broad flat-floored grooves, except on neck, where they become crowded. Axials practically obsolete on shoulder; weakly developed and faintly arcuate below (on body). Height: 9.0 mm.; width: 3.2 mm. Locality: Waimamaku River, sandstone with lenses of fine conglomerate and shell grit, ¼ mile below junction of Taita Stream with Waimamaku River. Awateria n.sp. (Plate 55, Fig. 5.) Close to experta n.sp., but with whorls higher in relation to width, and shoulder more sloping. The spiral sculpture is coarser and consists of distinct, spaced cords below angle of whorls and on body. Spirals on shoulder almost obsolete and sinus deeper than that of expalliata and experta. Axials on body 14 in number, practically obsolete on shoulder of whorls, existing as weak undulations on body-whorl, where they evanesce earl3* on base. Spirals on body-whorl 14 in number, distinctly raised, separated by flat interspaces whose width is greater than that of the ridges. Height: 8.0 mm.; width: 3.6 mm. Puha pusula n.sp. (Plate 55, Fig. 7.) Shell small, biconic, height of spire a little less than that of aperture; outlines straight, sutures indistinct. Periphery of whorls of spire situated low down close to suture, that of penultimate whorl a little anterior of middle. The peripheral spiral is tuberculate, there being 14 tubercles on penultimate whorl. There is a weaker subsutural spiral which is cut into beads, these corresponding axially with the tubercles of the periphery. Between these two spirals there is a broad, excavated, unsculptured zone on which is situated the sinus. Body-whorl with 8 to 10 thin, low, primary spirals below periphery, weaker interstitial secondaries usually present. Protoconch typical, similar to that of Puha sinusigera Powell. Pillar plications not in evidence. Height: 8.5 mm.; width: 4.0 mm.