291 
Dredged in 40 fathoms off Beachport, 43 perfect or very 
good; in 55 fathoms off Cape Borda, 23 poor; in 90 fathoms 
off Cape Jaffa, 4 poor; in 110 fathoms off Beachport, 1 good, 
4 moderate, 1 poor; in 130 fathoms off Cape Jaffa, 4 moder- 
ate; in 150 fathoms off Beachport, 1 good; in 300 fathoms 
off Beachport, 1 poor. 
While quite a rare shell on our beach, if present at all, 
it is comparatively common at 40 and 55 fathoms, where it 
is in good condition and quite typical in sculpture and col- 
ouring. When adult the shell may vary from 9 mm. to 5°25 
mm. in length. In the perfectly-formed mouth, which is 
rarely seen, the posterior gutter is converted into a round 
orifice by the forward growth of the margin of the aperture 
and its application to the sutural spiral beyond the sinus, 
and the basal part of the anterior canal is closed by contact 
of the projecting spur of the basal lip with the anterior part 
of the inner lip. The applied parts do not appear to actu- 
ally coalesce, so as to form absolute tubes, but they produce 
three distinct apertures. 
/9OTRIPEDRA lilacina, var. nov. (47, 
This is a very pretty variety, with a delicate lilac tint on 
the apex and a spiral of lilac tubercles above the suture; 
the rest of the shell is light-brown. That it is only a variety 
appears from the sculpture of the apex; the adult mouth 
when perfect with the three apertures, and the brown spots 
between the pearls of the lowest spiral. It may reach 11 
mm. in length, without an adult mouth. Sometimes the lilac 
tint is absent and replaced by white. It is referred to by 
Mr. Hedley in his paper quoted above. 
Dredged in Gulf St. Vincent, 10 good; in 40 fathoms off 
Beachport, 15 quite fresh; in 55 fathoms off Cape Borda, 12 
good, 5 poor. Taken on the beach, Gulf St. Vincent, 3 good ; 
west coast of South Australia, 3 good; St. Francis Island, 
12 good. 
/SOTRIPHORAnivea, var. nov. OL: 6 
This variety is pure-white ; its protoconch and sculpture 
are those of 7’. tasmanica, Tenison-Woods. The protoconch is 
well preserved, and is slightly mamillate. The first whorl 
begins in the centre, and has slight axial lire leading to a 
row of beads, and below this is a beaded carina; in the sec- 
ond whorl are two beaded carine. There is no evidence of 
any earlier protoconch having broken off. In a very large 
number of examples of 7’. tasmanica in various stages of 
growth, no individual, however immature, has been observed 
with a pointed protoconch. 
32 
