309 



sonia is to be associated with those Turritellas which Miss 

 Donald has grouped under a new section^ Colyoxiiwn^ because 

 of their deep sinus, this group must still be placed among the 

 Turriteilidse, and Alvrrhif^oriia must be shifted with them 

 into the same family, among the Toeiiioglossa, and separated 

 from the Pleurotoniariidai and oth-er Rhipidoglossa. But the 

 resemblances in. the test of lier ('olpospira, and of Murchixonia 

 are scarcely suliicient to justify this. 



Actseon roseus, Hedley, cm-, areatus, new vai-. 



Actaoii roseus, u. sp., Hedley, Proc. liiiiii. Sec, New South 

 Wales, 1905, p. 535, pi. xxxiii., f. 42. Type locality — Wyargine 

 Point, Middle Harbour, Sydney; also Eden, New South \\ales. 



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, YankaliUa Bay; 15 fathoms, oli' Point Marsdeu, 

 Kangaroo Island; and 25 fathoms, Thorny Passage, Spencer 

 Gulf; all dead. 



Actaeon retusus, n, sp. PI. xxix., tig. 12. 



Shell oval, shining, translucent, yellowish-white, thin, of 

 six whorls. Protoconch of one whorl, apex imnier&ed, 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-arcuate ly 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 striae cross the inci- 

 sions, which they punctate, climb, and crenulate their sides, 

 and traverse the intervening fiat spiral bands. 



Dim. — Length, 9'4 mm. ; breadth, 6"1 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. 



Diag?iosis. — It differs from A. toscks, Hedley, var. areatiiSy 

 Verco, in having a much less acute apex, a more elevated 

 spire, narrower incisions, more crowded axial striae, a less pro- 



