39 . 
S.A. N.\T., VOL. XIV. 
Novembkr, 1932. By Bernard C. Cotton and f. K . Godjuy. 
S. acutissimus Swerby 1866 {Leiostraca) (— L. lesbiet An- 
gas 1871). 'The Very Acute Needle Shell.” Scarcely fusiforin, 
acuminated, tapering, very thin; pellucid, white; smooth; whorls 
eight, slightly inflated, the last large; mouth narrow; columella 
long, rather straight. Height 3, diam. .8 mm. Gulf St. Vincent 
S.A. to Bunbury W.A., beach and down to S.S fathoms (Type 
locality ^ — Sydney { Reeve J ) . 
S. perexiguus Tate & May 1900 (“ Rissota minutissima 
Tenison-Woods 1878, not of Michelin). “The Very Scant Needle 
Shell.” Minute, pyramidal, po(ishcd; yc(llowish-white, except 
ihe livid protoconch; without ornament of any kind; protoconch 
obtuse; adult whorls four, slightly convex; mouth somewhat oval, 
channelled above; outer lip sharp, produced; inner lip reflexed. 
Height 1.5, diam. .75 mm. Beachport to Cape Borda, beach to 
55 fathoms. Rare. (Type locality — Blackman’s Bay, Tasmania). 
S« bivittata Reeve 1866 (Leisostraca) {= Eulima bUiiuata 
Adams 5c Reeve, preocc.). “The Two-banded Needle Shell.” 
Elongated, attenuate; pale, with two linear, approximate, spiral 
chestnut bands in the middle of the whorls; whorls nine, straight, 
moderately oblong; mouth narrow, pyriform. Height 10 , diam. 
1.8 mm. Beachport S.A., to King George Sound WA,, beach 
and down to 104 fathoms. (Type locality unknown. E. bHin- 
eata was described as from L(x>Ioo Sea). South Australian speci- 
mens have, in addition to the two brown lines in the last v/horl, 
a brown spot tending to a line further forward; the columella 
and margin of the outer lip also brown; some are destitute of 
coloui'y perhaps from bleaching, and the brown margin of pre- 
vious labra are seen as curved axial brown lines at intervals on 
the spire; these arc not found uniformly on both sides of the 
shell, but three-fourths round tlie shell, then one-fourth round, 
then five-sixths, then three-fourths, so that no regular series Is 
formed. 
S. williamsi sp. nov. PI. 1, fig. 20. “Williams’ Needle 
Shell.” Small, elongated., slender, sides of shell slightly convex, 
apical whorls slightly bent, shining, polished; white, marb.ed 
with brown, except for a pure white band beneath the suture; 
protoconch minute, slightly mucronate; adult whorls nine, some- 
what roonded; mouth pyriform; outer lip thin, almost straight 
at the side, rounded and slightly effuse at the base; columella 
slanting, almost straight. Type — Height 7, diam. 1.4 mm. — Gulf 
St. Vincent, 10 fathoms, (Reg No. D10637 S, Aus. ;Mus.), Re- 
lated to S. bivittatus Reeve,, but shorter, rather stouter, early 
whorls slightly bent, mouth not so long, not so effuse in from, 
agate marbling From S. ladder ae Hedley, it is stouter, mort 
