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DESCRIPTIONS OF NEW SPECIES OF MARINE 
MoOLLUSCA OF SOUTH AUSTRALIA, 
By Jos. C. Verco, M.D., Lond., &c. 
[Read October 6, 1896. ] 
PARES Nee Ve 
Voluta transluecida, spec. nov. Pl. vi., figs. 4 and 4a. 
Shell elongately ovate, very thin, diaphanous smooth and 
glistening, of six whorls including the nucleus. This is incon- 
spicuous, merging imperceptibly into the spire-whorls, apparently 
consisting of one turn and a half, very flatly convex at the apex, 
smooth. Spire-whorls sloping, slightly convex, suture simple, 
surface smooth, but for very obsolete incremental strizw. Body- 
whorl relatively large, smooth but for obsolete longitudinal striae, 
which become more conspicuous toward the aperture, especially 
anteriorly and over the scarcely raised varix of the notch. 
Aperture elongate-ovate, narrowed posteriorly, dilated anteriorly, 
and with a very wide shallow notch. Outer lip simple acute thin 
convex when viewed either laterally or from below. Columella 
convex in the posterior half, almost straight anteriorly; no callus 
of the inner lip ; fourplicate, the lower three plice well-marked 
narrow and equi-distant, the uppermost less raised and at a less 
distance. 
Ornament, a narrow spiral reddish-brown line close beneath 
the suture ; longitudinal narrow curved lines of the same color, 
about 16 in the body-whorl, composed of minute zigzags or of 
very small spirally elongated spots; two indefinite spiral color- 
bands encircle the whorl, one at the level of the posterior angle 
of the aperture, another just above the level of the highest 
columellar plait winding over the dorsum of the notch, composed 
of prolongations of the zigzags between the longitudinal lines, and 
thickening of the spots in the lines 
Tota] length, 39°5 mm.; greatest width, 16 mm.; spire, 14:5. 
Length of aperture, 25 mm.; width, 7 mm. 
Habitat.—One perfect dead specimen 20 fathoms off Newland 
Head, outside Backstairs Passage ; broken fragments of two in 
six to ten fathoms Yatala Shoal, and six small immature dead 
specimens from dredge siftings 22 fathoms Backstairs Passage 
( Verco ). 
