213 
initial half of a Cadulus, similar to UV. acuminatus, and the 
présence of both portions of ('. angustior, Verco, in its own 
locality heightens the probability; and these more or less 
fully formed individuals of C. spretus prove it. 
Cadulus (Polyschides) gibbosus, n.sp. Pl. xxvi., fig. 6. 
Shell smooth, polished, narrow, somewhat fusiform, 
slightly compressed dorso-ventrally, smaller behind; greatest 
diameter at the junction of the middle and anterior third ; 
dorsal surface obtusely angled at this point; ventral surface 
almost uniformly convex. Anterior end. sloping forward 
from the convex to the concave surface, mouth rather wider 
than high. Posterior end with a slit on each side, one on the 
convex surface and a wider curve on the concave. Colour 
milky-white, least opaque in the middle third, most in the 
anterior and along the concave side of the shell. It is some- 
what obliquely striatedly painted. At 1 mm. from the pos- 
terior end is a transverse colourless line. 
Dimensions.—Length, 9'7 mm. ; greatest diameter, 1°8 
mm.; diameter of the posterior end, ‘45 mm.; of the anterior 
end, 11 mm. : 
Locality.—In 300 fathoms off Cape Jaffa, type with 3 
others full grown, and 18 immature or fragments; in 130 
fathoms off Cape Jaffa, 4 moderately good and 2 immature. 
Type in Dr. Verco’s collection. 
Turbo jourdani, Kiener. Pl. xxvii., figs. 1 to 6a. 
In the Transactions of this Society, vol. xxxii., 1908, pp. 
338 to 340, I gave some notes on this species, with a descrip- 
tion of its operculum. I was unaware at the time that Dr. 
Cox had described the operculum in Proc. Linn. Soc., 
N.S.W., ser. ii., vol. iv., 1889, p. 189, from a specimen 
taken in Geographe Bay, Western Australia. 
His shell was 14 cm. long by 12°5 cm. wide, and its oper- 
culum was 95 mm. by 80 mm. Since my Note I have received 
a beautiful example from Mr. Elliot, of The Register office, 
which was found with the fish in it on Wedge Island at 
the entrance to Spencer Gulf. This measures 21 cm. in 
length by 18'5 cm., in the greatest diameter of its body-whorl, 
so that it is just half as large again as Dr. Cox’s specimen. 
But at Esperance Bay, in Western Australia, one was given 
to me measuring 22°3 cm. in length by 21 cm. in the greatest 
and 14 cm. in the smallest diameter of its bordy-whorl. It 
is a splendid great shell. Dr. Cox’s specimen extends its 
habitat to Geographe Bay; but I took it at Rottnest Island, 
opposite Fremantle, and the lighthouse-keeper there (Mr. 
