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and slightly sinistrally oblique below, the junction marked by a 
searcely bifid spiral callus plica. Inner lip with a thin smooth 
shining callus applied posteriorly, margined in the lower third, in 
some individuals with a margin just free throughout; a spiral 
tooth-like blunt process close to the suture forms with a corres- 
ponding one on the outer lip a kind of sinus. Canal short, rather 
wide, outer lip just everted; scarcely recurved, notched ante- 
riorly. Ornament faint rusty-brown with narrow white band 
above the sutures, and encircling the body-whorl just above the 
middle; bounded above by a line oné-third of its width, of 
darker colour, generally most marked on the costz so as to appear 
somewhat articulated ; a similar but less marked line bounds it 
below ; irregular rust-coloured longitudinal flames extend from 
the white bands to the anterior extremity of the body-whorl ; 
interior of aperture of a rusty-purplish colour with an indistinct 
broad whitish spiral band. In life a thin minutely hairy 
periostracum covers all the shell except the nucleus, and almost 
hides the ornament. 
Total length, 17 mm.; greatest width, 8-5 mm.; length of spire, 
8 mm.; body-whorl, 9 mm. 
Habitat—Dreged alive 15 fathoms Investigators Straits, 
one ; off Middleton, 15 fathoms, one recent ; 20 fathoms in and 
outside Backstairs Passage, one recent and one dead (Verco), 
Spencer Gulf. 
Variety, Z. Adcocki. Rather more solid, with about 11 
spiral lire in the body-whorl, which become progressively stouter 
and more distant anteriorly with one or two interstitial thread- 
lets, and where the lire are stoutest with secondary threadlets on 
their sides. The longitudinal coste are rather narrower and 
higher and quite pronounced posteriorly, but below the periphery 
they are almost broken up into very large tubercles on the spiral 
lire. The aperture is generally more contracted, there are seven 
well-marked teeth inside the outer lip, besides the posterior pro- 
cess. On the inner lip the columellar projection anteriorly is 
validly bifid, and at the margin of the lip there are four rather 
distant teeth in a series diminishing backwards, besides the well- 
marked posterior tubercle. The white band with its dark 
margins is less conspicuous, the longitudinal rusty waved flames 
are rather more marked, though somewhat broken up into dots — 
or blotches chiefly on the nodular intersections of coste and 
lire. Intermediate forms connect this variety with the ce 
species. 
Habitat.—Middleton Beach (D. J. Adcock). ; 
Diagnosis.—Hitherto, in South Australia, it has been called 
Cantharus rubiginosus, Rve., but is quite distinct from that. Its 
nearest ally appears to be "Buecinun D'Orbignyi, Payrandeau, 
