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4. A peripheral spiral of white spots, the oblique lines 
above this thickened at intervals to form ragged brown axial 
flames. 
5. Purple tinted. 
6. A broad amber band over the lower three-fifths of the 
spire-whorl ; a white band below this, from the level of the 
suture on the body-whorl; below this a somewhat fainter one 
on the base; the amber bands formed of very crowded oblique 
spiral lines. 
They have been dredged in 17 to 22 fathoms in Back- 
stairs Passage, 16 alive or in good condition ; in Gulf St. 
Vincent and Spencer Gulf at unrecorded depths, 5 dead; and 
taken on the beach along the South Australian coast and on 
St. Francis Island. Comparatively rare. 
The Vincta form may vary as follows :— 
1. The dark band on the spire-whorls may reach the 
anterior suture. 
2. There may be a white band between it and the suture. 
3. The band may be scalloped, behind only, or in front 
also; the posterior white bands may be interrupted by the 
points of the scallops reaching the suture. 
4. A second revolving broad band, generally lighter in 
colour, usually occurs on the front of the body-whorl, and 
may be quite separated from the first by a white band, or 
united at intervals by the points of the scallops. 
5. There may be numerous axial hair lines from the 
band, back to the suture, and forward to the base. 
6. There may be a single dark-brown band at the pos- 
terior suture, fading out anteriorly, and there may be in 
addition a double narrow line at the periphery. Middleton 
(Miss Stow). 
The maculated form :— 
This is the shell which was recorded in Adcock’s Handlist 
of Aquatic Moll. of South Australia, 1893, p. 5, No. 117, as 
C. Tayloriana, Reeve, albomaculata, Angas; but it was a mis- 
identification, and is a variety nearly allied to C. vincta, 
Tate. 
1. It has a row of dark-brown blotches on the spire- 
whorls, a second row just in front of the periphery on the 
body-whorl, and a narrow infrasutural row of white spots. 
Gulf St. Vincent, (1%) depth, 1 dead; Edithburgh rocks, 
many alive. 
9. The second row of blotches may be absent. Gulf St. 
Vincent, (?) depth, 1 alive, 7 dead; Edithburgh rocks, alive ; 
Venus Bay, 1; Beachport beach, 1. 
3. There may be a white-and-brown peripheral spiral, 
and the blotches may be broken up into short spiral splashes, 
