EULIMID. 73 
Length, ‘23; breadth, ‘1. 
Stewart Island to Auckland. 
Very like Zurbonilla nitida, Angas, Proc. Zool. Soc., 1867, p. 112. 
Genus, ODOSTOMIA—Fleming. 
Shell subulate or ovate, smooth; apex sinistral ; aperture ovate; 
peristome not continuous ; columella with one fold ; lip thin ; opercu- 
lum indented on one side. 
O. lactea, Angas; Proc. Zool. Soc., 1867, p. 112, pl. 13, fi Ite 
Shell turreted ; whorls flattened, very finely transversely striate ; white, 
sometimes slightly tinged with pink ; sub-diaphanous. 
Length, 3; breadth, -14. 
Stewart Island to Auckland. Australia. 
FAMILY—EULIMID:. 
Teeth rudimentary. Tentacles simple, subulate ; eyes sessile at their 
outer bases ; mantle enclosed, with a rudimentary siphonal fold ; foot 
linguiform, produced in front, with a bi-lobed mentum or fold above the 
front margin ; operculigerous lobe developed at the sides into even- 
edged, unequal expansions or lobes; operculum horny, ovate, sub- 
spiral. Shell white, smooth, polished, turreted ; aperture entire in front; 
columella simple. 
Genus, EULIMA—Risso. 
Spire frequently with an interrupted varix on one side; apex acute ; 
aperture oval, pointed behind; inner lip reflected over the pillar; axis 
imperforate ; outer lip thickened internally. 
E. chathamensis, Hutton, CMM, p. 23. Turreted; apex 
blunt ; spire whorls obsoletely transversely plaited ; white. 
Length, °23 ; breadth, ‘13. 
Chatham Islands. Auckland. 
SERIES—ROSTRIFERA. 
Head produced into a rostrum, with the tentacles on the sides of its 
base. 
FAMILY—CERITHIID. 
Radula long and linear ; laterals hooked, multicuspid ; outer laterals 
conical, curved. Rostrum broad and short; tentacles wide-apart, 
subulate ; eyes on short pedicels united to the outer sides of the tenta- 
cles ; mantle-margin with a rudimentary siphonal fold in front ; gill com- 
posed of a single series of plates; foot broad and short, angulated in 
front; operculum horny, spiral or sub-spiral. Shell spiral, many 
whorled ; aperture more or less channelled in front; outer lip often ex- 
panded in the adult. 
