Mangilia.'} GASTROPODA. 501 



tracted. Suture of the early whorls sharp, of those succeeding con- 

 cavely rounded. Aperture ovate, with a short open canal. Outer lip 

 broken away in the only type specimen. Columella straight, pointed 

 below. Inner lip narrow, spreading over the somewhat convex parietal 

 wall. 



Diameter, 3 mm. ; height, 6 mm. 



Animal unknown. 



Type in the Dominion Museum, Wellington. 



Hob. Off Great Barrier Island, in 110 fathoms. 



8. Mangilia munda, Suter, 1909. Plate 22, fig. 3. 



Mangilia munda, Suter, Rec. Canterbury Museum, i, No. 2, 1909, 129, pi. 12, 

 f. 6. 



Shell small, elongate-fusiform, thin and fragile, white, turreted, 

 axially costate and spirally striated. Sculpture consisting of narrowly 

 rounded, slightly oblique axial riblets, about 16 on the last whorl, 

 nearly continuous over the whorls, obsolete on the base, the interstices 

 slightly broader than the riblets ; they are crossed by spiral threads, 

 4 fine and close together on the shoulder, 1 on the carina of the whorl, 

 and 3 below it, the uppermost of these at some distance from the 

 keel ; the crossing-points produced into small oval gemmules ; the 

 base is spirally striate, all the striae in front of the aperture being 

 smooth. Colour white. Spire elevated conic, turriculate, nearly 1^ 

 times the height of the aperture. Protoconch globular, of 1^ smooth 

 whorls, the nucleus broadly rounded. Whorls 6, regularly increasing, 

 with a high sloping shoulder, the keel on the spire-whorls near the 

 middle, flat above and below the keel ; base contracted. Suture 

 somewhat impressed, lightly margined below. Aperture pyriform, 

 broadly angled above, with a short, broad, oblique, and truncated 

 canal below. Outer lip convex, thickened by an axial rib, slightly 

 angled above, and somewhat contracted below, with a shallow broad 

 sinus at the suture. Columella slightly oblique, lightly excavated 

 towards the straight parietal wall, curved below, and extending to the 

 left margin of the canal. Inner lip thin, narrow, smooth. 



Diameter, 3-2 mm. ; height, 7-5 mm. 



Animal unknown. 



Type in the Canterbury Museum, Christchurch. 



Hob. Twenty miles north-east of Flat Point, in 105 fathoms 

 (Edgar R. Waite). 



Remark. The species is closely related to M. dictyota, Hutt., 

 which, however, has less axial riblets ; the angle of the shoulder is 

 above the middle of the spire- whorls ; and the protoconch is much 

 smaller, with a minutely pointed nucleus. 



9. Mangilia murrhea, Webster, 1906. Plate 22, fig. 4. 



Mangilia murrhea, Webster, T.N.Z.I., xxxviii, 1905 (1906), 305, pi. 38, f. 1. 

 Shell small, fusiform, semitransparent, thin and fragile, turriculate, 

 faintly clathrate. Sculpture consisting of distant faint and flattish 



