Mangilia.~] GASTROPODA. 505 







13. Mangilia subaustralis, Suter, 1899. Plate 22, fig. 8. 



Mangilia subaustralis, Suter, T.N.Z.I., xxxi, 1898 (1899), 72, pi. 3, f. 2. 



Shell fusiform, white, turriculate, distinctly axially costate and 

 with fine spiral threads, canal very narrow. Sculpture consisting of 

 close straight rounded and prominent axial ribs, about 18 on the 

 last whorl, the interstices of about the same width as the ribs, which 

 are obsolete on the lower part of the base, flexed and less prominent 

 on the shoulder ; the surface crossed by equidistant spiral riblets, 

 separated by linear grooves, rubbed off on the top of the ribs, much 

 finer and dense on the shoulder. Colour yellowish-white. Spire 

 conic, turreted, of the same height as the aperture. Protoconch 

 of about 2 whorls, the nucleus smooth, convex, slightly lateral, 

 the second whorl convex, and minutely reticulated. Whorls 6i, 

 distinctly shouldered, flatly rounded below the angle ; base much 

 narrowed. Suture impressed, submargined. Aperture oblique, very 

 narrow, angled above, narrowed and drawn out to a short canal below, 

 its base not notched. Outer lip thickened by the last rib, angled 

 above, then moderately convex, with a shallow sinus below the suture. 

 Columella vertical, straight, excavated on meeting the faintly convex 

 parietal wall. Inner lip narrow and thin. 



Diameter, 4-5 mm. ; height, 11-5 mm. 



Animal unknown. 



Type in my collection. 



Hob. New Zealand, exact locality unknown. 



Remark. This shell is closely allied to M. australis, Ad. & Ang., 

 from Australia and Tasmania, which, however, is usually larger, has 

 the whorls but indistinctly shouldered, the aperture not angled above, 

 and the anterior canal broader. 



Genus 2. DAPHNELLA, Hinds, 1844. 



Daphnetta, Hinds, in Belcher, Voy. " Sulphur," Mollusca, ii, 1844, 25. 

 Type : Pleurotoma timnceiformis, Kiener. 



Shell rather small, thin, ovate, fusoid or buccinif orm ; spire conical , 

 but moderately elevated ; protoconch smooth, polygyrate, regularly 

 conic, with a small and pointed nucleus ; whorls convex, finely can- 

 cellated or reticulated, with a narrow shoulder, which is sometimes 

 excavated ; body- whorl very long, with a convex and but little at- 

 tenuated base ; aperture rather narrow, oval or subrhomboidal, pro- 

 duced below into a sometimes short wide canal, without emargination 

 at its base ; outer lip simple, convex, with a rounded and shallow 

 sinus at the shoulder, generally dilated below in adult and perfect 

 examples ; columella excavated on meeting the parietal wall, slightly 

 bent towards the left margin of the canal ; inner lip thin, narrow, in- 

 conspicuous. 



Distribution. Warm seas. 



Fossil in the Tertiary. 



