309 
sonia is to be associated with those Turritellas which Miss 
Donald has grouped under a new section, Colpospira, because 
of their deep sinus, this group must still be placed among the 
Turritellide, and Murchisonia must be shifted with them 
into the same family, among the Trnioglossa, and separated 
from the Pleurotomariide and other Rhipidoglossa. But the 
resemblances in the test of her Colpospira, and of Afurchisonia 
are scarcely sufiicient 9 sua this. 
Actzon resets, Hedley, var. areatus, new var. BS 7 
Actwon roseus, n. sp., Hedley, Proc. Linn. Soc., New South 
Wales, 1905 5 ’ 
05, p. 535, pl. xaxiii., f. 42. Type locality—Wyargine 
Point, Middle Harbour, Sydney ; also Kden, New South Wales. 
Our South Australian shell has a shorter spire and a 
longer aperture ; also two white spiral bands and several undu- 
lating axial bands, which break the colour up into oblong 
blotches. | Dredged in 18 fathoms, Investigator Strait; 22 
fathoms, Yankalilla Bay; 15 fathoms, off Point Marsden, 
Kangaroo Island; and 25 fathoms, Thorny Passage, Spencer 
Gulf; all dead. 
Actzeon retusus, n. sp. PI. xxix., fig. 12. 2735 2 
Shell oval, shining, translucent, yellowish-white, thin, of 
six whorls. Protoconch of one whorl, apex immersed, convex, 
quite smooth, ending abruptly in an oblique retrocurrent scar. 
Spire whorls roundly shouldered immediately below the 
suture, then convexly sloping. Suture deeply narrowly chan- 
nelled. Body-whorl roundly-obliquely cylindrical. Aperture 
obliquely-arcuately pyriform. Outer lip simple, smooth inside, 
finely-crinkled outside, very slightly compressed above its 
centre ; basal lip well-rounded, its inner half distinctly evert- 
ed. Columella with a wide, simple oblique fold just below 
the base of the body-whorl, over which the thin inner lip is 
applied to join the labrum at the suture. Umbilicus small. 
Spiral incisions, six in the penultimate, forty in the body- 
whorl, extending to the columella, where they become crowded 
and fine. Very delicate, close-set, axial striz cross the inci- 
sions, which they punctate, climb, and crenulate their sides, 
and traverse the intervening flat spiral bands. 
Dim.—Length, 9°4 mm.; breadth, 61 mm. Length of 
aperture, 6°5 mm. ; width, 2°9 mm. 
Locality.—Type, 200 fathoms, off Beachport, with two 
other examples; also in 100, 110, and 150 fathoms; off Cape 
Jaffa in 90 and 130 fathoms; N.W. of Cape Borda in 60 fa- 
thoms. In good condition, but none alive. 
Diagnosis.—It differs from A. roseus, Hedley, var. areatus, 
Verco, in having a much less acute apex, a more elevated 
spire, narrower incisions, more crowded axial striz, a less pro- 
