MOLLUSCA — HEDLEY AND MAY. 119 



Cymatium columnakium, sp.nov. 

 (Plate xxiii., fig. 15). 



Shell small, thin, elongate, spire rather distorted. Whorls 

 •eight, including a smooth, rounded two-whorled protoconch. 

 Colour pale straw. Sculpture : varices eight, sculptured by the 

 spirals, disposed irregularly at intervals of half or two-thirds of a 

 whorl. Longitudinal ribs small, about twenty to a whorl, not 

 reaching the base of the last whorl, narrower than their inter- 

 stices. Both ribs and interstices crossed by small spiral threads, 

 towards the periphery some threads pack in two prominent 

 bundles, giving the whorl a slightly bicarinate outline ; on the 

 final whorl the threads amount to thirty-five. Edge of aperture 

 produced into a thin upstanding rim. On the base of the 

 columella are two elongate tubercles, and distributed within 

 the outer lip are half a dozen others. Canal short. Length, 21 ; 

 breadth, 8 - 5 mm. 



Several specimens, all dead and mostly broken, were taken off 

 Cape Pillar. The species was previously dredged off the Pilot 

 Station, Derwent River, by one of us (May). 



The novelty stands nearest to C. quoyi, Reeve, from which it 

 differs by being thinner, more slender, and with weaker sculpture. 

 Three tertiary shells, I', oligostiruti, T.gemmulatus, and T.sexcoslatus, 

 are described by Prof. R. Tate :; as related to quoyi. Dr. Dall is 

 inclined to refer Triton quoyi to Conrad's genus Personetla i . 

 Kesteven has suggested that Nassaria kampyla, Watson, should 

 also be grouped with G. quoyi 5 . Apparently Paristernia murray- 

 ana, Tate' 5 , is related to Watson's species. Dr. J. C. Verco, who 

 kindly compared the species at our request, writes, 2 vi. '08 : 

 " P. murrayana, Tate, is quite distinct from N. kampyla, 

 Watson, in being more solid, and in having three plicate teeth at 

 the end of the columella." 



JSTatica elkingtoni, sp.nov. 



(Plate xxiii., fig. 18). 



Shell small, smooth, rather thin, globose, spire exsert, whorls 

 four. Colour dull white, apex orange, gradually fading away on 

 the succeeding whorls, the last trace being a faint subsutural 



:i Tate— Trans. Roy. Soc. S. Austr., x. 1888, pp. 126-7. 



* Dall— Smithsonian Miscell. Coll., 47, 1904, p. 130. 



5 Kesteven — Proc. Linn. Soc. N.S. Wales, xxvii., 1902, p. 473. 



6 Tate— Trans. Roy. Soc. S. Austr., x. 18S8, p. 155; xi. 1S89, pi. iv., f. 4. 



