147 e 
and S. consors, their habitat being given as St. Vincent Gulf; 
and then sent the type of S. consors to the Brit. Mus. as from 
Ceylon.” No shell answering to its description has been found 
in S. Aust. 
Scala valida, spec. nov. PI. iv., fig. ABS 
Shell elongate, imperforate, 9 whorls. Protoconch con- 
spicuous, submammillate, 1 whorls, at first smooth, then with 
gradually developing axial cost; it ends abruptly with a 
faintly averted edge, and is followed by spirally striated 
sculpture. Spire-whoris uniformly convex. Suture deep, 
subcanaliculate. Body-whorl convex, with a bold, square, 
subtuberculate peripheral rib ; base somewhat concave. Aper- 
ture slightly oblique, roundly oval, faintly flattened anteri- 
orly; border well defined, smooth, and flat; at the base its 
outer margin is not curved, but straight. Varices 12, 
slightly advanced at the upper suture. 
Sculpture.—Axial ribs, 18 in the body-whorl, about as ' 
wide as the interspaces, prominent, round, tapering at each 
end, terminating at the peripheral rib, which widens to meet 
them, and so becomes undulatingly tuberculate. Spiral lire 
12 on the body-whorl above the periphery crossing the costz 
and extending to the aperture: 7 spiral lire on the base in- 
creasing in width towards the axis. The interstices between 
all lire spiral and basal and the edges of the peripheral rib are 
punctate. 
Ornament.—The shell is whitish. Three obscure spiral 
light-brown bands, one tinging the peripheral rib, one just 
below the centre of the whorls, and one midway between this 
and the upper suture. The last band is chiefly represented 
by a small brown blotch on the rib behind each variceal costa. 
Length, 6°4 mm.; spire, 2°17 mm. ; aperture, including the 
rim, 1-6 mm.; width, 2°3 mm. 
Hab.—Backstairs Passage, deep water, 6 recent, none 
alive. 
Type in Dr. Verco’s collection. 
Variations.—The spiral liree may be only 9 or may be 17. 
One shell is 6°9 mm. in length, with 9 whorls. 




ala morchi, Angas. 
Scala (Cirsotrema mdxchi), n. sp., Proc. Zool. Soc., Lond., 
1871, Jan. 3, p. 15, pl. i., PAZ; type locality, Port Jackson ; op. 
cit., 1871. Jan. 17, p. 90, sp. 28; Tryon, Man. Conch., vol. ix., 
1887, p. 82, pl. 16, f. 7. 
Some twelve examples of this\ghell have been dredged 
by me in the deeper waters of St. Vineent and Spencer Gulf, 
and one at 104 fathoms, 35 miles south-west of the Neptune 
