GASTEROPODA 207 



whorls with the addition of a third subsidiary keel between the two main keels ; these 

 are crossed by slightly oblique axial riblets which are raised into moderately strong 

 rounded gemmules at the points of intersection with the keels. On the body whorl there 

 is the addition of a smooth sutural keel and two more below it on the base. Aperture 

 oval, vertical, having a deep narrow sutural notch and produced below into a short 

 almost closed tube-like canal, slightly bent to the right. Peristome thin and sharp, outer 

 lip in profile straight with axis of shell medially, but strongly recurrent at sutural notch. 

 Ground colour of shell pale buff, with protoconch, upper and lower keels but not the 

 subsidiary third keel marked out in light brown. Base from below the smooth sutural 

 keel, including the canal, coloured uniformly light brown, slightly darker than that of the 

 protoconch and keels of the spire. 



Height 4-3 mm.; diameter 1-3 mm. (Holotype). 



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



This species is nearly allied to N. infelix (Webster, 1906), but differs from that species, 

 which is plain white, in being banded with light brown. Also, infelix is more slender, 

 has the three gemmulate spirals equally developed over the later whorls, the base with 

 a weaker pair of spirals, and an oval aperture with an almost closed canal, more as in 

 ampulla, Hedley, 1902. 



Family VERMETIDAE 



Genus Vermicularia, Lamarck, 1799 



Type (monotypy) : Serpula lumbricalis, Linn. 



Vermicularia maoriana, n.sp. (Plate LV, figs. 9, 10). 



Shell small, solitary, spirally coiled ; nuclear whorls attached to some foreign object, 

 succeeding whorls regularly coiled but sinistral, adherent to each other as in a normal 

 conical trochoid. The aperture has a flange-like continuous peristome from which 

 emerges a loose, detached, irregularly spiral tube. The position of the peristome at an 

 earlier stage is shown by a varix at the close of the penultimate and in line with the present 

 one ; the tube also bears a similar terminal flange. The surface is smooth but with traces 

 of obsolete axial folds. Umbilicus deep, about one-third width of base. Colour dull white. 



Height 2-4 mm.; diameter i-i mm. (Holotype). 



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



This is not a typical Vermicularia, but it is placed here provisionally pending a 

 revision of the Austral members of the family. 



Family LAROCHEIDAE 



Genus Larochea, Finlay, 1927 



Type (by monotypy) : Larochea miranda, Finlay 



Larochea secunda, n.sp. (Plate L, fig. 7). 



Shell minute, thin, fragile, dull white, globose, wide-mouthed and few-whorled, 

 resembling a diminutive Lamellaria. Whorls three, including a smooth planorbid apex 



