S.A. ftAls, i'ot. xvi. 
. 20. South Australian Shell s. April 10th, 1935. 
tralia). The shell is thin, broadly depressed, and almost without 
sculpture. Two examples, dredged in South Australia, are beau- 
tifully ornamented on the last three whorls with a spiral line 
articulated brown and white like a twisted cord, below which are 
crescents of brown, open forwards, also with axial flames of 
brown growing wider as they descend to the periphery, beyond 
which they extend for a short distance across the base. 
C. australe Broderip 1830 (Trochus) . “The Southern Cal- 
liostoma.” Conical, granulate-cingulate; with a larger supra- 
sutural cingulus ; buff or nearly white, with spots of reddish or 
violaceous; whorls flat, base flat, imperforate, throat silverv. 
Height 25, diam. 22 mm.. (Type locality — Australia). “In wee’d, 
Normanville also Hardwicke Bay, uncommon. Has the facies 
of a miniature C. rubiginosum Valenciennes” (Verco MSS). It 
is not represented in the British Museum. 
C. incertum Reeve (Z izyphinus). PI. 1, fig. 10. “The 
Doubtful . Calliostoma.” Shortly conical, sinistral, yellowish- 
white; spirally closely linearly ridged; whorls slopingly convex, 
last whorl obtusely angled at the base. Pleight 15, diam. 15 mm. 
Dredged, at several stations, Beachport to Cape Borda, 17-150 
fathoms. (Type locality — Tasmania). Reeve’s type, in the 
British Museum, is a dead shell, and South Australian examples 
are nearly half as large again. It appears to be a distinct spec- 
ies, and to be normally sinistral in its volutions. 
Astele Swainson 1854. Shell nacreous, pyramidal or 
trochiform, profoundly umbilicate, unarmed, base convex, colum- 
ella indistinct, aperture broader than high, the margin of both 
lips thin. Operculum large, round, corneous, multispiral, with 
an ovate, central nucleus. Type — Astele subcarinatum Swainson. 
Astelena lredale 1924 (subgenus). Apical features suggest a 
loosely coiled form of Calliostoma. Spire slender, its lateral out- 
lines concave; last whorl rounded at the periphery and convex be- 
neath; aperture rounded, outer and basal lips forming a half 
circle; columella deeply arcuate ending in an inconspicuous tu- 
bercle at base; umbilicus deep, funnel-shaped, bounded by an 
angle and of a different character from Astele. Radula of the 
type is easily separable from that of subcarinatum the type of 
Astele. Type — Zizypliinus scitulus A. Adams. C. multigranum 
Dunker may belong here. 
Callistele (subgenus now). Shell conical, whorls straight 
sloping, spirally sculptured; suture linear; periphery acutely an-* 
gular, base flatly rounded; umbilicus narrow; aperture roundly 
quadrate; outer lip convex, its margin sinuously convex below 
the suture and concave towards the periphery; basal lip con- 
vex, somewhat effuse, with callus at base partly bordering the 
