l-:>ithria.\ GASTROPODA. 379 



distinctly toothed. Columella vertical, arcuate, with a number of 

 tubercles at the base. Inner lip rather narrow upon the pillar, ex- 

 tending over the parietal wall, which has a well-marked plait below 

 the suture ; the lip is narrowed below, forming the inner edge of the 

 canal. Fasciolc prominent, lamellate ; a narrow groove between it 

 and the edge of the canal. Operculum horny, yellowish, the nucleus 

 apical. 



Diameter, 15 mm. ; height, 28 mm. Angle of spire, 47-50. 



Animal unknown. 



Type in my collection. 



Hab. Dunedin Harbour, type (H. S.) ; Lyttelton Harbour (H. S.) ; 

 Preservation Inlet ; Auckland Islands. 



6. Euthria striata, Hutton, 1875. Plate 45, fig. 1. 



Cominella striata, Hutton, T.N.Z.I., vii, 1874 (1875), 458. pi. 21. Pisa-nia 

 striata, Hutton, T.N.Z.I., xvi, 230; not of Gmelin. P. striatula, Hutt.. 

 Plioc. M., 42, pi. 6, f. 12. Euthria striata, Hutt,, Index, 73. 



Shell fusiform, rather small, white without colour-markings, spirally 

 lirate. Sculpture consisting of equidistant, narrow, and flatly rounded 

 spiral ridges, the interspaces with fine spiral threads, one of them 

 usually more prominent ; whorls below the protoconch with broadly 

 rounded axial ribs, extending sometimes over all the spire-whorls ; 

 growth-lines distinct, close together, somewhat flexuous. Colour pale 

 yellowish-brown, but mostly of a dirty-white ; aperture white inside. 

 Spire conical, about the same height as the aperture with canal, some- 

 times a little less ; outlines straight or lightly convex. Protoconch 

 very small, papillate, of 2 smooth convex whorls. Whorls 6 to 7, 

 first slowly increasing, the last high, nattish or somewhat rounded, 

 flattened below the suture ; base contracted, concave. Suture im- 

 pressed. Aperture sub-vertical, oval, channelled above, with a mode- 

 rately long oblique canal below, which is recurved, open, and notched 

 at the base. Outer Up convex, rather blunt, thickened and toothed 

 in quite adult specimens. Columella vertical, slightly concave, with 

 a few small tubercles below. The inner lip rather broadly extended 

 over the pillar, forming but a thin callosity upon the parietal wall, 

 which has 1 or 2 plaits below the suture ; below the lip is narrowed, 

 drawn out to a fine point about half-way down the margin of the 

 canal. Operculum horny, yellowish-brown, oval, the nucleus apical. 



Diameter, 15 mm. ; height, 29 mm. Angle of spire, 45. 



Dentition. Ration, T.N.Z.I., xvi, pi. 11,1. 3. 



Type, from the Pliocene of Wanganui, in the Otago Museum. Dun- 

 edin. 



Hab. Lyttelton Harbour ; Te Onepoto Bay, near Sumner (H. S.) ; 

 Bluff (Mrs. Bollons) ; Preservation Inlet ; Chatham Islands. 



Remark. Recent specimens have the spiral ridges usually not so 

 acutely raised as fossil shells. 



Fossil in the Pliocene. 



