310 
nounced columellar fold, and the absence of the colour-pat- 
tern. 
Variations.—One shell is somewhat more ventricose,. 
another more elate, with more valid axial strie; the former 
has two faint rusty blotches of colour on the dorsum of the 
body-whorl, a little below the suture; the latter has the trace 
of a pinkish tinge. 
Pupa intermedia, Angas. aoe “24 
Buccinulus intermedius, Angas, Proc. Zool. Soc., London,, 
1878, p. 862, pl. liv., f. 11. Type locality, Aldinga. 
Adcock, Handlist of Aquatic Moll. of S. Austr., 1893, p. 10, 
No. 424, p ‘ : 
Solidula intermedia, Angas, Pilsbry., Man. Conch, vol. xv., 
1893, p. 145, pl. xxA, figs. 55, 56. 
It has been dredged dead in Hardwicke Bay, Spencer Gulf,. 
Investigator Strait, St. Vincent Gulf, and Backstairs Passage, 
at all depths from 14 to 22 fathoms, and at 62 fathoms N.W. 
of Cape Borda. It has been taken alive at 15 fathoms, Inves- 
tigator Strait. 
It exhibits the following variations: The middle third 
of the body-whorl may be slightly concavely compressed. The 
axial sculpture may vary from microscopic accremental striz, 
just punctating the spiral incisions, when these are narrow, 
or crenulating their edges when wider, up to fairly well- 
marked oblique strie, which divide the wide incisions into 
squarely-rounded shallow pits, and cross the intervening flat 
riblets. The spiral incisions may be equidistant all over the 
body-whorl, or absent from the upper half of the body-whorl, 
or they may be trebly distant here. They may be merely very 
fine and shallow punctate engravings, or rather wide furrows 
with crenulated edges, or latticed into squarish pits. But, 
all variations grade into one another. 
Pupa hyalina, n. sp. Pl. xxix,, fig. LI. SS 
Shell minute, diaphanous, fusiformly oval, five whorls. 
Protoconch distinct, glassy, smooth. Suture adpressed. 
Whorls sloping, convex. Aperture narrow, long, and pyri- 
form. Outer lip uniformly curved, simple, thin, continued 
into a round basal lip, which is thickened towards the colu- 
mella. The inner lip is a thin glaze over the body-whorl, and 
is expanded slightly beyond the pillar over the perforation. 
There is a curve of the columella forming a plait running into 
the basal lip, and a second well-marked oblique plait where 
the pillar joins the body-whorl. The spire-whorls have sub- 
lenticular wavy spiral incisions, which also cover the body- 
whorl, being most marked at the base, and nearly as well 
marked below the suture. Very fine, rather sinuous, accre- 
mental striz. Colourless. 
