28. 
South An si rail an S lulls. 
S.A. NAT.. VOL. XIV: 
Nuvlmbkr. 1932. 
an enthusiastic collector tutored by the late Mr. E. II. Matthews^ 
and a foundation member of the Shell Club 1925, now the Mala- 
cological Society of South Australia. 
O. compta Brazier 1877. “The Adorned Odostomia.” 
Elongated, very thin, transparent; white; smooth, spire much 
lengthened; whorls eight, slightly convex, last minutely keded' 
in the centre, angulated at the sutures; sutures channelled; 
mouth ovate, produced anteriorly; peristome thin, acute, interior 
of mouth near the edge granulated, furnished well down with 
nine narrow, minute raised lines of striae, interstices broad, 
minutely granulated; columella with strong, thick, transverse 
spiral fold. Height S, diam. 2 mm. Very rare. Beach — ^Gulf 
St. Vincent. Also beach — King George Sound, W.A. (Type 
locality — Darnley Island, Torres Straits, 20-30 fathoms, sandy 
bottom. Like O. simplex Angas, but differs by being keeled. 
According to Hedley, the following shells from Darnley Island 
and Cape Yorke are slight variation of one form — O. affi7iis,. 
Brazier. O, compta Brazier, O. poKta Brazier, 0. parvula 
Brazier (not O, polita Bivona and not Pease). 
Turbonilla Risso 1826 {—Cheimiitzia D’Orbigny 1839:77:: 
PyrAisctis l^hillippi, 1841: ^ EiilurhomUa Semper 1861). Slen- 
der, elongated; mostly axially ribbed or spirally striate; 
protoconch sinistral; adult whorls many, dextral, and but 
slightly conv^ex; mouth simple, oval or subquadrangular, peris- 
tome not continuous; outer lip thin; columella vertical, either 
without folds or with a single small obscure fold; operculum 
horny, subspiral, margin next the columella entire, face with 
a spiral groove. Type — T. elegantissima Maegregor. Distin- 
guished from Odostomia by the elongated form, usually axially 
ribbed, and the columella with, at most, a very^ obscure fold. 
Turbomlla comprises a great number of small, graceful white 
shells, w'hich have been grouped in a number of genera and sub- 
genera. Some new species in the South Australian Museum will 
be described at a later date. 
T. acicularis A. Adams 1853. PI. 1, fig. 10. { = mac- 
leayana Tenison-Woods, 1876). “The Needlc-like Turbonilla.’* 
Extremely attenuate, turreted, rather solid, shining: white; axial 
fibs, oblique, eleven to fourteen in the last whorl, smooth, raised, 
rounded, reaching from suture to suture; whorls fifteen, flattened; 
suture well impressed; mouth quadrate; columella straight^^ 
obliquely plicate. Height 10, diam. 1.5 mm. Beach — Corney 
Point, Hardwicke Bay, uncommon. Dredged — Backstairs Pas- 
sage, Gulf St. Vincent, five fathoms. (Type locality — acicularis,. 
