91 
longitudinal curved costelle ‘aleve the periphery, becoming 
gradually less conspicuous until they disappear, remaining longest 
close to the suture; near the aperture in a large example they | 
reappear. Aperture obliquely-elongately-oval, descending into 
the canal, pinched into a tiny furrow posteriorly by the marginate 
suture. Outer lip simple, slightly sinuous, thin, finely crenated, 
obsoletely lirate internally. Columella subarcuate, sub-convex at 
the beginning of the canal; only a trace of callus, except anterior 
to the varix of the notch where it is subconcavely reflected, and 
forms a minute rimate umbilicus. The spiral lire are almost 
quite obliterated at the inner lip, and three sub-raised thread-like 
plicze are visible deeper in the throat, equal and equi-distant, and 
with the same obliquity as the spiral lire, the highest at the 
centre of the aperture; sometimes a fourth exists close below 
them. Canal nearly as long as the aperture, sub-concave length- 
wise along its left border, in the same sinistral oblique line as 
the aperture, wide, oper, scarcely notched. Ornament, curved 
longitudinal rust-brown streaks on the summit of the costa, 
sometimes broken into dots on the spiral lire; at irregular dis- 
tances on the body-whorl, and slightly sigmoid ; crowded into a 
rusty area on the varix of the notch. 
Total length, 515 mm.; greatest diameter, 19:5; length of 
aperture, 15°5 ; width, 6:5; length of canal, 11 mm. ‘The relat- 
ive lengths of the last whorl (including aperture and canal) and 
the spire vary slightly in individuals of the same size, and as the 
shell grows, the spire, which is at first shorter than the last 
whorl, becomes longer than it, as shown in the following 
series :— 
Spire 7:75, whorl 9°75, as 79:5 to 100. 
6 11-75, “6 14:25, «c 89-4 73 K 
“ 13:5, “6 16-, 73 84-4 iG 
6c 19:, 6c 22°25, & 854 6c 
73 28:, 73 26:25, “106°9 cc 
L. Walkeri of J. C. Melville, Proc. Malac. Soc. Lond., 1895, 
~yol. I., No. 5, p. 221, pl. xiv., fig. 9, from Cossack, W. Australia, 
approaches it, but that shell is smaller, length 25 mm., more solid, 
costee about half as numerous and more valid, suture not 
marginate, aperture with a distinct continuous inner lip, a thick 
everted or bevelled outer lip, and a more abrupt origin of the 
canal from the aperture. The above diagnosis is constructed 
from his plate and rather short description. 
Habitat. —.Eyre’s Sand-patch, West Australia, many dead, 
Mr, Pulleine (after whom the shell is named), and Verco ; Largs : 
Bay, St. Vincent’s Gulf (D. J. Adcock); subfossil, dredgings — 
from Port Adelaide (Dr. Perks). 
el 

