126 



and my figure gives an extremely aberrant variety of the- 

 same. species. 



Type in my collection. 



Strebloceras cygnicollis, Hedley. 



Strebloceras cygnicollis, Hedley, Proc. Linn. Soc, New South 

 Walea, 1904, part 1, p. 189, pi. viii., figs. 12 to 14. Type locality 

 ■ — Port Jackson. Pritchard and Gatliff, Proc. Roy. Soc, Victoria, 

 1906, vol. xviii. (N.S.), part 2, p. 56, recorded for Victoria. 



Dredged in 55 fathoms north-west of Cape Borda, 4 alive, 

 1 dead. 



The smooth glassy embryonic portion beyond the marked 

 varix is not equally thin-walled throughout, but the spire and 

 the proximal fifth are solid, and then the very thick walls 

 gradually thin towards the varix. 



Triphora tasmanica, Tenison-Woods. Var. lilacina, Verco; 

 car. aureovincta, Verco, 



This exquisitely pretty little shell was taken in perfect 

 condition in 55 fathoms off Cape Borda. 



It has a golden band like T. regina, Hedley, but in- 

 stead of colouring the most anterior spiral of pearls, it orna- 

 ments the smooth spiral plait in front of this, and so is found 

 in the suture and on the base of the body-whorl. Its proto- 

 conch is that of T. tasmanica, and has not the spicular form 

 of T. regina. It is very deeply-coloured purple, like the var. 

 lilacina, Verco. One example, perfect, of eight whorls, was- 

 taken. 



Type in my collection. 



Triphora novapostrema, n. sp. PI. xxx., tigs. 1 and 2. 



Shell immature, of eight whorls, including the proto- 

 conch of two whorls, the first nearly smooth with a round 

 projecting apex, the second with two stout prominent keels, 

 gradually becoming nodular. In the first spire-whorl arises 

 a faint third spiral, posterior to the others (whence the specific 

 name), which continuously enlarges till it nearly equals them 

 in size. They are crossed by axial liras, about fourteen in the 

 last whorl, both axials and spirals being well marked, the 

 latter the stouter, and being tuberculate at their intersection. 

 The peripheral spiral is prominent and subtuberculate, it is 

 visible in the earlier sutures, but not in the later ; two flat 

 obsolete plaits curve round the base. Colour white. 



Dim. — Length, 3'1 mm. ; breadth, 1*2 mm. The largest 

 example, immature, is 5*2 mm. 



Locality. — Dredged in 55 fathoms off Cape Borda, type- 

 with 7 others, some quite fresh, all immature: in Gulf St. 

 Vincent, 1. 



