South Australian Shells. 
S.A. X \T., VOL. XV. 
march 27tii. 1934. 
E. Candida A. Adams 1851. "The Shining-white Lmargin- 
: Elliptical, depressed-conic, oblique protoconch subposter- 
i< r and inclined backwards; white; radiating riblets. scaly, alter- 
;.tcl\ larger and smaller, interstices latticed; margin ol aper¬ 
ture denticulate, deeply incised in front. Length 13, breadth 
10. height 6 mm. All along the South Australian coast¬ 
line. not uncommon; beach and dredged to 150 fathoms. Alsr 
Western Australia — Rottnesi, king (leorgc Sound, Lsperance. 
Banbury, Lllensbrook. (Tvpc locality—Port Adelaide, on the 
sands). E. Candida is more solid than E. dilccta, the ribs and 
o ncentric lirac fewer and stouter, the fissure not so deep, and a 
marked difference is in the manner in which this is filled up 
In E. dihrla there is a prominent thin costa on each side of the 
. 'Mire, and between these the shell is scalloped, convex upwards. 
: bout one scallop to two concentric lirac. In E. Candida it forms 
stout raised rib. 
E. subtilitexta \ erco 1908. Ovate, rather thin; protoeonch 
v •'! curved, one sixth of length from posterior end; shell convex 
; uteriorh from apex to margin; posteriori\ concave below the 
u'.'cx. then convex, then somewhat spreading near margin; white: 
radial ribs, sixty, low, !!atlv rounded, half as wide as the inter¬ 
spaces, projecting beyond and crenulating the margin: concen¬ 
tric lamellae, narrow, erect, rather crowded, cancellate the sur- 
; ce; siit narrow, margined by a low thin erect lamella, posterior 
tv--thirds closed, closing callus sunken and scalloped with trans¬ 
verse erect lamellae convex towards the apex: interior smooth 
; ud white. Length 6.5, breadth T9, height 1.4, fissure 1.4 nun. 
Dredged—Beachport, Cape Borda, St. frauds Island, 15-100 
u thorns. Also Western Australia—Rottnest. (Type locality — 
DO lathoms, off Beach port. South Australia). E. superha Jfcd- 
.cy has the same number of radial ribs and the dentate margin, 
duty has higher concentric lamellae, E. dilecta A. Adams, has a 
Munilar sunken slit lasciole. and nearly the same number of rad- 
lather more; but has ruder ribs wider than their interspaces. 
E. patula Cotton 1930 (E. super ba pa tula Cotton 1930). 
If-- “J’he Spreading Kmarginulam Shell large, elevated, 
xai. margin spread, widest at the lateral line of the apex, and at- 
onuate anteriorly; exterior gray, with the alternate large ribs 
cite and separated by one large and two small pinkish-brown 
cm, fissure deeply slit; about sixty radial ribs, sharp, elevated,. 
■" 1 ted b\ narrow deep interstices in which arise sccondarv riblets; 
ucnse bnbricating scales transverse both ribs and furrows; slit 
