126 
the total length to that of aperture in V. Avreuwslere is 100 to 62), 
more angulated whorls, by the ascension of the anterior part of 
the body-whorl on the spire, and by its wavy-striated surface. 
The last character, which it has in common with Voluta ( Voluto- 
conus) coniformis, Cox, is very exceptional in the genus. 
Columbella cominellzformis, spec. nov. Pl. i., fig. 8. 
Shell elongately oval, moderately solid, shining, unicolorous 
(pellucid-white, rose, or purplish-brown); apex somewhat apicu- 
late ; pullus semicylindrical of two smooth whorls, the first very 
small, the second narrow and elongate. Spire-whorls four, 
strongly nodulose-plicate (nine or ten on the penultimate), 
spirally distantly linear-sulcate, and striated transversely; the 
two posterior whorls are subangulated. 
The body-whorl has about two plications in its posterior part, 
which become evanescent in an alignment with the hinder angle 
of the aperture ; the rest of the surface is without ornament, but 
is sculptured with strize of growth and incised spiral lines, the 
latter passing into sulci separating depressed narrow ridges on 
the base. 
Aperture narrowly subquadrate; canal short, everted; the 
outer lip has a blunt edge. The medial part of the body-whorl 
behind the aperture is slightly compressed and there is a slight 
tabulation at the suture, which produce a slight insinuation at 
the posterior angle of the aperture. 
Dimensions.—Length, 10; breadth, 4:25 ; length of aperture, 
5 mm. 
Localities.—I have collected about a dozen examples in as 
many years, extending from Fowler Bay, St. Vincent Gulf, Cape 
Northumberland to Victoria. 
This species has much the same build as C. Smitha, Angas, 
and C. atrata, Gould, but it is conspicuously different by its 
smooth body-whorl and nodulose plicee, and is moreover a much 
larger shell. 
Turbonilla ecrenulifera, spec. nov. Pl. i., fig. 2. 
Shell elongately cylindrical, thin, translucent-white, regularly 
axially ribbed, without spiral sculpture; the ribs are slightly 
arched, broad, and are continued backwards as crenatures on the 
very narrow obtuse shoulder of the whorl. 
Whorls, excepting the apical ones, six; the pullus is hetero- 
strophe, with the apex transverse and exsert. The axial plice 
decrease in strength as they approach the anterior suture, and 
on the last whorl are almost obsolete. -The aperture is quad- 
rately oval, the columella has an inconspicuous fold. 
This species has much the aspect of a Parthenia. 
~ 
Dimensions.—Length, 5; breadth, 1:25 mm. 
