12 OLEACINID. 
few, rapidly increasing, the last dilated; peristome thin, simple, acute. 
Animal too large entirely to enter the shell. 
World wide. 
In the type species the lingual teeth are roo rows, of 75 each ; the 
marginal teeth with a single long, recurved, apex. 
iV. dimidiata, 2refer; 22S, 151 Carla. Bra. Mus. 7a; 
Reeve, 72. Shell much depressed, periphery ovate, very thin, 
sculptured with minute arcuate strize, silky, shining, pale horn colour ; 
spire nearly flat; whorls two and a quarter, which are open beneath, 
and with a narrow membranaceous edge ; aperture horizontal, as large 
as the whole shell ; peristome simple, with regularly curved margins. 
Height, ‘o5; greatest breadth, -2 ; least breadth, ‘14. (Pfr.) 
V. zebra, Ze Guill, Rev. Zool, 1842, 136; . zebra, Pfr., Cat. 
Pulmonata tn Brit. Mus., 40; M.F.V., 2., p. 809, 5. p. 20. Shell 
rounded, umbilicated, depressed-convex above, more convex beneath, 
hyaline, ornamented with obliquely wavy flamelets of white and chest- 
nut ; whorls 4, thinly striated above ; aperture rather dilated ; umbilicus 
very small. 
Axis, °2; breadth, :3. (Pfr.) 
Auckland Islands only. 
Genus, DAUDEBARDIA—Hartmann., 
Eye-peduncles short ; tentacles rudimentary ; pulmonary orifice on 
the right border of the mantle, a little posterior ; body elongated, greatly 
developed. Shell on the hind part of the body, perforate, horny, 
depressed, paucispiral, horizontally and rapidly involute, last whorl very 
large ; aperture oblique, very wide. Animal too large entirely to enter 
the shell. 
Europe. 
D. novoseelandica, Pfeffer; IH.V., vol. 5, p. 10, Wo. to. 
Shell imperforated, greatly depressed, ambit oval, rather solid, sculptured 
with distinct strie of growth and radiant impressed lines, fulvous ; spire 
small, occupying one-eighth of the entire length of shell ; whorls, 2%, the 
last laterally sub-compressed ; columella thickly callous above. 
Height, -1 ; length, .4; diameter, -27. (Pfr.) 
Waikato. 
Genus, HYALINA—Ferus. 
Tentacles short ; lateral teeth of tongue aculeate. 
Mantle thickened, and slightly reflected; tail obliquely truncated. 
Shell depressed, vitreous, shining, umbilicated; whorls regularly 
increasing, the last not descending at the apertute ; aperture rotundately 
lunar ; peristome thin, straight. 
Eupope. N. America. W. Indies. 
H.* corneo-fulva Pfeiffer Malak. Bl, vii., 1861; MV. vol. 
&, p. 145, Wo. 673. Shell umbilicated, sub-orbicular, depressed, thin, 
faintly finely striated, most distinct at the suture, shining, pellucid, 
horny-fulvous ; spire slightly elevated; suture impressed; whorls 5, 
rather convex, regularly increasing, the last depressly-rotund ; umbilicus 
