Su^er. — Neiu Species of New Zealand Mollusca. 369 



sharp ; basal lip broadly convex. Columella vertical, indistinctly 

 arcuate ; parietal wall straight ; inner lip very little expanded, 

 with, a sharp edge. 



Diameter, 14 mm.; height, 4 mm. 



Type in my collection. 



Hob.— Titahi Bay, Cook Strait (Miss M. Mestayer). 



18. Latirus huttoni, n. nov. Plate XXX, fig. 3. 



Trophon dubius, Hutton, Journ. de Conch., vol. xxvi, 1878, p. 13. 

 Tar on dubius, Hutton, Trans. N.Z. Inst., vol. xvi, p. 227. 



The late Captain F. W. Hutton proposed the genus Taron 

 for his Trophon dubius in 188o (Trans. N.Z. Inst., vol. xv, p. 119), 

 because the dentition proved the mollusc to belong to the 

 Fusido3, and, in his opinion, the operculum has not an apical, 

 but subcentral, nucleus. This latter is not correct, as the growth- 

 lines on the outer side of the operculum distinctly show the 

 nucleus to be apical. Looking at the operculum held up against 

 the light, however, one gets the impression that the nucleus is 

 subcentral, and this has no doubt misled Captain Hutton. The 

 dentition is that of Latirus, as already pointed out by 

 J. C. Melvill in 1891 (Mem. and Proc. Manchester Lit. and 

 Philos. Soc. (4), vol. iv, p. 12), and the shell has all the characters 

 of that genus. Taron, therefore, must be reduced to a synonym 

 of Latirus. The specific name of Hutton being preoccupied 

 in the genus for a fossil shell by Beyrich, I propose the name as 

 above. 



19. Euthria strebeli, n. nov. Plate XXX, fig. 4. 



E. antarctica, Beeve, Hutton, Man. N.Z. Moll., 52 ; Index, 73. 

 Pisania antarctica, Beeve, Hutton, Trans. N.Z. Inst., vol. xvi, 

 p. 231 (not of Beeve). 



Shell not large, fusiform, very solid, usually spirally ridged. 

 Sculpture consisting of numerous narrow spiral ridges, much 

 more prominent upon the base, the interstices with fine spiral 

 threads ; two or three whorls below the protoconch are axially 

 costate ; growth-lines oblique, fine. Colour whitish or cinereous, 

 very often with light-brown spiral bands ; aperture purplish - 

 brown within, outer lip white or with a few brown patches. 

 Sometimes the whole shell is covered by a blackish coating. 

 Spire elevated-come, height almost that of the aperture with 

 canal ; outlines but little convex. Protoconch minute, of 2 

 smooth and convex whorls. Whorls 8, first slowly increasing, 

 the last high ; they are very lightly convex, depressed below 

 the suture, the base contracted. Suture not much impressed. 

 Aperture very little oblique, narrowly oval, distinctly channelled 



