488 GASTROPODA. [Pectinibranchia. 



and closely costate, about 18 on the last whorl, the interstices narrow ; 

 towards the base the riblets are getting obsolete ; they are crossed 

 by equidistant spiral cords of nearly equal strength, the points of 

 intersection produced into transversely oval gemmules ; the inter- 

 stices between the spirals of about equal width as the cords, but that 

 below the first spiral is slightly deeper and broader than the others ; 

 on the body- whorl there are about 15 spirals, of which the lowest 6 

 are smooth. Colour white. Spire elevated conic, outlines somewhat 

 convex, but little higher than the aperture. Protoconch a little oblique 

 to the axis, of 1^ smooth whorls, the nucleus globose. Whorls 6, the 

 last high and somewhat ventricose, convex, attenuated toward the 

 base. Suture not deep, undulating, bimarginate. Aperture slightly 

 oblique, high and narrow, angled above, with a rudimentary broad 

 canal below ; its base truncated. Outer lip convex, thin, crenated 

 on the outside by the spiral sculpture, with a shallow sinus below 

 the suture. Columella subvertical, almost straight, with 2 rounded 

 short plaits above, absent in young examples. Inner lip thin and 

 narrow, spreading over the straight parietal wall. Operculum un- 

 known. 



Diameter, 3-1 mm. ; height, 7-2 mm. 



Animal unknown. 



Type in my collection. 



Hob. Near the Snares, in 50 fathoms, type (Captain Bollons) ; 

 twenty-four miles south-east of Long Point, in 120 fathoms ; of! 

 south-east of Cape Saunders, in 100 fathoms (Edgar R. Waite). 



Remark. In form and sculpture somewhat resembling Daphnella 

 vestalis, Hedley. 



2. Mitromorpha striata, Hutton, 1873. Plate 46, fig. 27. 



Bela striata, Hutt., C. Tert. M., 1873, 5. Daphnella striata, Hutt., P.L.S. 

 N.S.W. (2), i, 1886, 214 ; Plioc. M., 52, pi. 7, f. 33. Mitromorpha striata, 

 Hutt. : Suter, T.N.Z.I., xxxix, 265. 



Shell rnitriform, rather thin, turriculate, finely spirally lirate. 

 Sculpture consisting of very fine, somewhat unequal and crowded 

 spiral lirse, absent on the narrow shoulder, but covering the whole of 

 the base ; they are lightly decussated by the fine growth-lines. Colour 

 white. Spire elevated conic, turriculate, of the same height as the 

 aperture. Protoconch of li carinated and finely spirally striate whorls, 

 the nucleus small, rounded, depressed. Whorls about 6, narrowly 

 shouldered, flatly convex below the angle, body-whorl contracted 

 towards the beak. Suture uneven, but little impressed. Aperture 

 slightly oblique, narrowly ovate, broadly angled above, with a short 

 broad and recurved canal below, its base not emarginate. Outer lip 

 lightly convex, subangled above, very little contracted below, some- 

 what thickened and minutely crenate within, with a broad and very 

 shallow sinus close to the suture. Columella vertical, slightly arcuate. 

 Inner lip narrow, distinctly bordered, the edge uniting above with 



