18 
South Australian Shells. 
S.A. NAT., VOL. XIV. 
November, 1932 . 
Bay; dredged Backstairs Passage, Gulf St. Vincent, Spencer 
Gulf, Cape Borda, 14-62 fathoms. Also Albany, W.A. beach to 
35 fathoms. (Type locality — Aldinga Bay). The spiral incis- 
ions may be equidistant all over the body-whorl, or absent 
from the upper half of the body- whorl. Allied to P. affinis 
Adams from N.S.W. but differs somewhat in form and style of 
colouration. 
P. hyalma Vcrco 1907. ‘‘The Hyaline Pupa.” Minute, 
transparent, fusiformly oval; colourless; spiral incisions, sub- 
Icnticular, wavy, cover the, body-whorj; growth striae, very 
hne, rather sinuous; protoconch distinct, glassy, smooth; adult 
whorls about four, sloping, conyex; suture adpressed; mouth 
narrow, long, pyriform; outer lip simple, thin, continued into a 
round basal lip, which is thickened towards the columella; inner 
lip expanded slightly beyond the columella, over the umbilicus; 
a curve of the columella forms a fold running into the basal lip, 
and a second well-marked oblique fold where the columella 
joins the body-whorl. Height 3, diam. 1.5 mm. (Type locality 
— Fowler and Streaky Bay). Also Beach, Normanville, Carawa 
Beach, Brothers Island, Coffins Bay, 
Leucotina A Adams 1860 (= Myonia A. Adams 1860: 
Monoptygma A. Adams 1851). Ovate or elongated, usually 
rimate, thin; whitish; spiral grooves punctured or subpunctate; 
whorls convex; mouth rather small, oblong, produced and round- 
below; outer lip simple or crenulated within; columellla with 
an oblique fold. Type — L. niphonensis A. Adams (Japan). 
L. concinna Adams 1854 {Tornatella) (=: Rissoa punctata^ 
striata Tenison-Woods 1878: = Fossarus bulimoides Tenison- 
Woods 1876: — Acteon austrinus Watson 1886), PI. 1, fig. 3. 
Ovately turreted, umbilicated; grayish- white; spirally grooved, 
interstices microscopically crenulated; spire elevated; protoconch 
obtuse; adult whorls about five, flatly convex, angulated above; 
suture distinct; mouth oval, produced below; outer lip iiratc 
within; columella with oblique fold, somewhat obsolete. Height 
13, diam. 5 mm. Dredged, Backstairs Passage, Investigator 
Strait, Gulf St. Vincent, 15-20 fathoms. Also Albany to Bun- 
bury, W.A., beach to 22 fathoms. (Type locahty — Moreton 
Bay). Examples vary considerably in their relative width and 
in the number of their spiral lirae. 
L. micra Pritchard & Gatliff 1900 (Turbontlla) (= Syr- 
nola puntospira Tate & May 1900). “The Tiny Leucotina.* 
Bulimoid; white; spiral lines, very fine, microscopically pitted; 
protoconch of one-and-a-half turns, oblique apparently smooth 
but pitted microscopically; adult whorls about three, slightly 
