S.A. NAT., VOL. XIV. 
November, 1932. By Bernard C. Cotton and F. K. Godfr ey. 3L 
slightly oblique, rounded, wider than the interspaces, here and 
there two or more ribs are confluent to form a broad varix; 
last whorl with about twenty axial ribs, evanescent at the regular- 
ly rounded periphery; spiral lines, about fifteen on the penulti- 
mate whorl, cross the axials; base spirally linear-sulcate; whork. 
twelve, flatly convex; suture well defined; mouth oblong; colu- 
mella with an obscure fold. Height 15, diam. 4 mm. Dredged 
generally, but rare. (Type locality — Gulf St. Vincent, deep wat- 
er). Variable — form (a) has varices on the body whorl and 
base but not on the spire whorl; the ribs end on a prominent 
peripheral spiral lira; there is no peripheral angulation; the spiral 
incisions are wider and form broad spiral rounded lirae; the 
shell may be purple brown or quite white. Form (b) is narrow- 
er than the species, has no varices, no angle, no sudden cessation 
of costae. Form (c) is variced, angled, and the ribs suddenly 
cease. 
T, admiranda Tate & May 1900 (— Elusa bifasciata Teni- 
son-Woods 1877: — Tf. f estiva Angas 1877. “The Turbonilla 
vwrhy of admiration.” Turreted-tapering, translucent, shining; 
the whorls are one-half white and one-half cliestnut, with a line 
of deep colouring on the boundary; on the last whorl the band 
of colour is bordered by two darker lines; axial ribs numerous, 
rounded, twenty-six in the last whorl; mouth ovate; columella 
with one fold. Height 7, diam. 1.5 mm. Beach, general in shell 
sand, rather uncommon. Also beach, King George Sound, W.A. 
(Type locality — Blackman^s Bay, Tasmania). 
T. fusca Adams 1853 (Chemnitzia) (z= T. erubescens Tate 
1879). “The Reddish-brown Turbonilla.” Turreted lanceolate, 
shining; reddish-brown; axial ribs numerous, smooth, as wide as 
the interspaces which show numerous spiral incisions; whorls 
numerous, rounded, subangulated above; suture deep; mouth sub- 
quadrate; columella with one oblique fold. Height 6, diam. 
1.2 'mm. Beach, general, uncommon. Dredged to 55 fathoms. 
(Type locality — Port Lincoln). A small shining red brown spec- 
ies with convex whorls and numerous thin ribs. A variant has 
a spiral groove just before the suture, crossed by the axial costae, 
and fewer spiral threads; dredged Cape Borda, 55 fathoms. 
Oacilla A Adams 1867. Solid, ovate or pyramidally turret- 
ed, imperforate; whorls strongly spirally lirate; mouth oval or 
subquadrate, with a strong, transverse, median parietal plication.. 
Type — P. (Pyramidella) annulata A. Adams (Philippines). 
O. tasmanica Tenison-Woods 1876 {Parthenia) {= O. 
ligata Angas 1877). PI. 1, fig. 21. “The Tasmanian Oscilla.” 
Minute, pyramidal, tumid, iricarinate, subumbilicate; rosy white 
