24 
South Australian Shells. 
S.A'. NAT., VOL. xv. 
Nov. 30 th , 1933. 
present on the last onc-and-a-half whorls, very narrow, its edges 
pinched up into a strong keel; the slit fasciole terminates about 
half a millimetre behind the peristome in a long narrow slit; 
aperture very oblique, ovate, narrowed above; columella slight¬ 
ly arcuate, nearly vertical; umbilicus narrowly perforated, funnel 
shaped, smooth inside. Height 2.5, diam. 2.5 mm. Beach— 
Guichen Bay; dredged—Beachport to St. Francis Island, 6-110 
fathoms. Also Western Australia—Bunbury Beach. (Type 
locality—Blackman's Bay, Tasmania). Very variable in its 
sculpture. There may be no carination except that of the slit 
fasciole (is this S. tasmanica Petterd?) or only one keel, or two 
or three. The spiral lirac around the umbilicus may be vand, 
when the three keels arc marked, continuing their series as less¬ 
er keels to the edge of the umbilicus; or they may be distinct 
and lamellose when the keels are absent. Spiral li.-^e are present 
from suture to umbilicus, and these vary much in their visibility. 
Then the axial striae are sometimes obsolete, sometimes rather 
distant, sometimes distinct, crowded, and erect, especially be¬ 
tween the suture and the slit fasciole, also sometimes between 
the keels at the base. Watson’s carinata has a well marked keel. 
The young of this species will doubtless be taken some day for 
a Trochus, and the adolescent for a Scissurella , the great length 
of the old canal and the open foramen being peculiarly deceptive 
(Watson). Specimen illustrated, 2.5 x 2.6 mrm, 104 fathoms, 
Neptune Island, carinate form. 
S. beddomei Petterd 1884. a Beddome’s Schismope.” 
Minute, turbinately depressed), thin; sordidly djufl white; 
axially plicate, plicae more prominent at base; whorls three- 
and-a-half, protoconch Hat; sinus conspicuous with raised mar¬ 
gins; mouth ovate, of moderate size. Height 1, diam. .75 mm. 
Rare. Guichen Bay, 1 specimen. No records from W r estern 
Australia. Taken at Western Port, Victoria. Tasmania, North 
and South, ranging down to 100 fathoms. (May). (Type local¬ 
ity—NAV. coast of Tasmania). 
S. pulchra Petterd 1884. “The Fair Schismope.” 
Minute, thin; white; axially striate, striae passing over 
the two prominent keels at the periphery of the last whorl, giv¬ 
ing them a nodose appearance; whorls four. Height 2, diam. 1 
mm. Leach- Robe, Largs, to Venus Bay; dredged—Beachport 
co St. Francis Island, 35-150 fathoms; Gulf St. Vincent, depth 
not recorded. ^ Also W estern Australia—beach, Hopetoun, King 
Geoige Sound. (Type locality—Tasmania, north-west coast). 
In fonn not unlike S. alkinsoni 1 enison-Woods,. but very differ* 
ent in ornamentation. In shell sand, but from its light texture 
generally more or less broken. 
