134 GASTROPODA. [Pectin ibranchia. 



few spiral ridges on the ueck of the base. Colour yellowish-white 

 with fulvous zigzag markings, interrupted on the body-whorl by a 

 narrow whitish spiral band below the periphery ; lower part of base 

 white. Spire high, acuminate, conic, about 1| times the height of 

 the aperture ; outlines straight. Protoconch papillate, of 1| smooth 

 whorls. Whorls 6, regularly increasing, flat ; body-whorl lightly con- 

 vex, contracted below. Suture linear, false-margined, as is very often 

 the case in Eulima. Aperture slightly oblique, narrow subchannelled 

 above, but little narrowed below, without a canal. Outer lip vertical, 

 rounded below, thickened and denticulate within. Columella vertical, 

 slightly bent to the left below. Inner lip narrow and smooth, very 

 thin on the straight parietal wall. Operculum unknown. 



Diameter, 2-75 mm. : height. 6-6 mm. 



Animal unknown. 



Type in my collection. 



Hab. Bay of Islands. 



r>. Mitrella rosea, Hutton, 1873. Plate 19, fig. 17. 



Obdiscus roseus, Hutton, C.M.M., 22 ; J. cle Conch., 1878, 24 ; M.N.Z.M.. 

 72 ; P.L.S. N.S.W., ix, 935. Pyrarnidella rosea, Hutt, : Suter, T.N.Z.I., 

 xxxiv, 214 ; Index, 74. Columbetta pseutes, Suter, T.N.Z.I., xxxviii. 

 1905 (190(3), 329. 



Shell small, subulate, thin, smooth, pink or purple, usually with 

 1 or 2 white spiral bands. The only sculpture consists of a few spiral 

 ridges on the lower part of the base, and very fine straight growth- 

 lines. (Colour pinkish or purplish-brown, generally with a white spiral 

 band below the suture on the spire-whorls and one on the periphery 

 of the body- whorl ; the neck of the base also white, but sometimes 

 there is a white band above the suture and only 1 central band on the 

 body- whorl, the neck not white ; occasionally there are no spiral 

 bands at all. Spire high, acute, conic, about 1| times the height of 

 the aperture ; outlines straight. Protoconch obtuse, of 1J smooth 

 flatly convex whorls, the nucleus depressed globose. Whorls 6. 

 regularly increasing, but faintly rounded ; base flattish. lightly con- 

 tracted. Suture linear. Aperture small, oval, lightly channelled above, 

 slightly narrowed below, base moderately notched. Outer lip sub- 

 vertical, convex below, sharp, smooth inside. Columella vertical, very 

 little twisted below. Inner lip narrow, smooth, with a sharp outer 

 edge, spreading as a thin glaze over the flat parietal wall. Operculum 

 unknown. 



Diameter, 2-5 mm. ; height, 5 mm. (type). 



Animal unknown. 



Type in the Dominion Museum, Wellington. 



Hab. Stewart Island (type) ; Hauraki Gulf (H. S.) ; Cook Strajt : 

 Auckland Islands (Professor W. B. Benham) ; Snares, in 50 fathoms 

 (Captain Bollons). 



