2, 4 DISCOVERY REPORTS 



are situated on the neck of the base. Aperture moderate, with parallel sides, slightly 

 angled and weakly notched above and produced below into an open, short, slightly re- 

 curved canal which is broadly notched at its extremity. Outer lip rather straight 

 medially, thin at edge but thickened both externally and internally just back from the 

 edge. There are no denticles on the inside of the outer lip. Columella vertical medially 

 and having a slight ridge of callus bordering its edge. Ground colour pale buff, with 

 protoconch, basal sculptured neck and aperture white. There is also a broad central 

 band of irregularly shaped white blotches and small haphazard blotches of light brown. 



Height 3-9 mm.; diameter 1-9 mm. (Holotype). 



Habitat: Off Three Kings Islands, St. 933, 260 m. 



This species also is allied to stephanophora, differing in narrow build and longer re- 

 curved canal. From turgida it differs in shape, and the absence of denticles inside the 

 outer lip. 



Genus Antimitrella, n.gen. 

 Type : Antimitrella laxa, n.sp. 



This genus is necessary for the species described below, which although evidently 

 related to Zemitrella, differs in having a finely axially striated protoconch, no spiral cords 

 on the neck of the canal, and loose rapidly increasing coiling with a downward sag, the 

 whole shell thus remaining narrow and approximately cylindrical. Also the basal notch 

 is broader and weaker than in Zemitrella. A point of resemblance to Zemitrella is in the 

 moderately strong oblique plait at the base of the pillar. 



Antimitrella laxa, n.sp. (Plate LVI, fig. 7). 



Shell small elongate-cylindrical, thin, white. Whorls 3I, very rapidly increasing and 

 loosely coiled, with a pronounced downward sag. The protoconch is large, almost 

 bulbous, and is sculptured with very fine and closely packed axial striations. Post- 

 nuclear whorls smooth except for faint irregular axial growth lines. Spire about same 

 height as aperture, outline of whorls very lightly convex. Body whorl comprising three- 

 fourths the height of the shell. Aperture long and narrow. Outer lip vertical, very 

 little thickened. Inner lip spread as a weak callus. Pillar bordered below by a moder- 

 ately strong oblique plait. Anterior canal broad, very shallowly notched. Neck of canal 

 not constricted and without spiral cords. 



Height 2-2 mm. ; diameter 075 mm. (Holotype). 



Habitat: Off Three Kings Islands, St. 933, 260 m. 



Genus Liratilia, Finlay, 1926 



Type (original designation) : Daphnella conquisita, Suter 



Liratilia sinuata, n.sp. (Plate LVI, fig. 2). 



Shell small, moderately solid. Spire tall, ii times height of aperture. Whorls sharply 

 angled just above the middle, six in number, including a conical smooth protoconch of 

 two whorls. Sculpture consisting of prominently raised rounded spiral cords, the one at the 



