Marshall and Murdoch. — Tertiary Mollusca. 81 



sculpture consists of axial and spiral cords forming nodules on the crossings ; 

 thev are equal to or rather wider than the interspaces ; on the body- whorl 

 the axials are more distant and less marked especially towards the lip, 

 there are about thirteen on the penultimate whorl, growth-striae are well 

 marked in places and there are several prominent varices ; of the spiral 

 cords there are six or seven on the penultimate whorl and fourteen or fifteen 

 on the last, with an occasional minute thread in the grooves, those on 

 the base and canal smaller and crowded, on each whorl the two spirals 

 immediately below the sutures are small and close together. Aperture 

 ovate, slightly oblique, the outer lip with a stout varex, somewhat 

 expanded and with several stout elongated denticles ; columella almost 

 straight, smooth, with a stout callus narrowing to the end of the beak, . 

 which is slightly twisted. 



Length, 13 mm. ; width, 6 mm. ; length of aperture and canal measured 

 on the angle, 7 mm. 



Locality : Waikopiro. 



Type in the Wanganui Museum. 



This small species came to light in the Suter collection. It is labelled 

 by him " n. sp.," and it is only one of many with which he was unable to 

 deal. 



Cymatium pahiense n. sp. (Plate XVIII, fig. 5.) 



The specimen is embedded in sandy clay, and the front only is visible. 



Shell of medium size, stout, shortly fusiform, aperture longer than the 

 spire ; whorls about five or six, the last large and narrowed to the short 

 anterior canal ; apex missing, the lower spire-whorls convex, lightly angled 

 above ; sutures impressed, apparently not deep ; the body-whorl with a 

 prominent varex to the left of the aperture. Sculpture consists of axial 

 and spiral cords, the latter more pronounced and forming rows of small 

 nodules, the separating grooves in width about equal to the cords ; on the 

 penultimate whorl there are apparently four or five spiral cords. Aperture 

 slightly oblique and somewhat narrow, the outer lip widely expanded, thick 

 and with ten to a dozen stout lamellae, which curve into the aperture ; 

 inner lip with a broadly expanded thin callus not obscuring the spiral 

 sculpture ; the columella almost straight, a few small lamellae at the 

 anterior end, four stout rounded plates on the middle area, and immedi- 

 ately above these narrowly and rather deeply excavated, thence curving 

 outward to the lip with the nodular spiral cords continuing into the 

 aperture. 



Length, 40 mm. ; width, 23 mm. ; length of aperture and canal, 25 mm. 



Type to be presented to the Wanganui Museum. 



Locality: Pahi. Collected by Marshall. 



The apical whorls are missing, and therefore the proportional length of 

 the aperture and canal to the total length is not as great as the measure- 

 ments given above would indicate. It is a somewhat peculiar form, and 

 placing it in Cymatium is not altogether satisfactory. 



Cypraea sp. (Plate XVIII, fig. 6.) 



Specimen very fragmentary. Spire concealed, aperture narrow above 

 and strongly curved, outer lip thickened and extending above the spire, the 

 margin incurved and dentate, inner lip with strong transverse teeth on the 

 posterior area and perhaps continued to the anterior end. 



