554 FUNAFUTI ATOLL. 
and contracting at the aperture. First two whorls smooth, the rest 
sculptured by about forty, fine, close, even, flat-topped, spiral 
lyre; parted by sharp, narrow interstices. On the base are 
eight, raised, radiating bars of callus, unevenly set round the 
umbilicus, like the spokes of a wheel. A fifth of a whorl behind 
the aperture the scar of a former aperture has left a kind of 
varix. Umbilicus small, its margin crenulate. Aperture oblique, 
circular, entire; left margin barely recurved; lower right margin 
advancing over the umbilicus in imbricating callous tongues; upper 
right margin linked to the preceding whorl by a V-shaped callous 
ridge. Major diameter 1:86, minor 1°76; height 1:16 mm. 
One specimen dredged in 200 fathoms off Tutaga Islet. 
By its small size and peculiarly sculptured base, this species is 
sufliciently distinguished from the remainder of the genus. 
LIoTia sp. 
(Fig. 66.) 
Shell globose, rather flattened on the 
base. Colour cream. Whorls three. Sculp- 
ture—eight equally spaced spiral lyre, can- 
cellated by the intersection of about eigh- 
teen longitudinal ribs of equal size. Um- 
bilicus narrow. Aperture unfinished. 
Major diameter 1:16, minor 1:6; height 
1:16 mm. 
One specimen in 200 fathoms off Tutaga 
Islet. 
This shell, though not adult, is evidently new. Its future 
recognition should be ensured by the remarkable sculpture. 
Probably it belongs near Liotia and possibly to the new genus 
Mecoliotia. Until the important characters of the aperture are 
known, no good end would be served by bestowing on it a specific 
name. 
LIoTIA PARVISSIMA, sp. nov. 
(Fig. 67.) 
Shell minute, solid, turbinate. Colour 
cream. Whorls four. Sculpture—a 
heavy, elevated keel on the shoulder, 
two equally massive on the periphery, 
and two smaller on the base. Across 
keels and interstices run distant, longi- 
tudinal, raised threads. |Umbilicus 
small, oblique narrow and deep. Aper- 
ture, circular, oblique, with a short but 
