Marginella.'] GASTROPODA. 465 



11. Marginalia plicatula, Suter, 1910. Plate 20, figs. 18, 



Marginella (Glabetta) plicatula, Suter, Subantarct. Islds. N.Zeal., i, 1909, 

 29, pi. 1, f. 4, 5. 



Shell very small, volutiform, fairly solid, white, axially finely plaited. 

 The sculpture consists of very fine subequidistant axial plications. 

 Colour a dirty white. Spire very little raised, broadly conoidal, with 

 obtuse apex. Whorls about 3, the last large, convex, slightly con- 

 tracted at the base. Suture inconspicuous. Aperture high and narrow, 

 almost as high as the shell. Outer lip thickened, smooth inside, with 

 an outer varix extending along the base. Columella slightly oblique, 

 almost straight, with 4 pi eminent plaits, the upper two more trans- 

 verse than the lower two, which are much closer together. Inner lip 

 very narrow. 



Diameter. 1-7 mm. ; height, 3 mm. 



Type in the Canterbury Museum, Christchurch. 



Hab. Ten miles north of Enderby Island, Auckland Islands, in 

 85 fathoms (Edgar R. Waite) ; one specimen. 



12. Marginella pygmaea, Sowerby, 1846. Plate 20, fig. 19. 



Marginella pygmcea, Sow., Thes. Conch., i, 1846, 386, pi. 75, f. 78, 79 ; Conch. 

 Icon., xv, pi. 23, f. 125 ; Pritchard and Gatliff, P.R.S. Vic., xi (n.s.), 191. 

 M. volutiformis, Reeve, Conch. Icon., xv, pi. 24, f. 131 ; Tate and May, 

 P.L.S. N.S.W., 1901, 362. J/. translucida, Sowerby : Tryon, Man. 

 Conch. (1), v, 26, pi. 8, f. 35 ; not of Sowerby. JU. turbinata, Sowerby : 

 Tryon, Man. Conch. (1), v, 93, pi. 7, f. 5 ; not of Sowerby. 



Shell small, volutiform, solid, subtransparent, yellowish - white, 

 smooth. There is no sculpture except fine growth-striae. Colour 

 yellowish-white, the outer lip white. Spire low, conoidal, somewhat 

 variable in height, usually a quarter to a third the height of the 

 aperture. Protoconch convex, smooth. Whorls 4, the last large and 

 moderately convex, narrowed below, spire-whorls but faintly convex. 

 Suture indistinct, often margined below by a white narrow band. 

 Aperture high and narrow above, widening towards the base, chan- 

 nelled above, the outer lip but little incised, truncated and very lightly 

 emarginate below. Outer lip thickened, smooth inside, with an outer 

 varix extending across the base to the inner lip. Columella lightly 

 oblique, straight, with 4 subequidistant prominent plaits ; the upper two 

 thin, sharp, and nearly transverse ; the lower two somewhat stouter 

 and oblique. Inner lip thin, shining, extending over the lightly convex 

 parietal wall and the greater part of the ventral side of the body. 



Diameter, 4 mm. ; height, 7 mm. (Mokohinau Group specimen). 

 Diameter, 4 mm. ; height, 5-5 mm. (Foveaux Strait specimen). 



Animal unknown. 



Type in the British Museum. 



Hab. Bay of Islands ; Whangarei Heads (C. Cooper) ; Mokohinau 

 Group ; Hauraki Gulf ; Foveaux Strait ; Chatham Islands : some- 

 times found crawling near low-water mark in sandy places Also 

 Tasmania and Australia. 



