GENUS BUCCINUM. 43 
than all the others, and separated by a broad and deep suture, 
forming a kind of scaffold, which renders it very round above. 
The other whirls are not very-apparent; at their surface is 
seen, besides the longitudinal folds of which we have spoken, 
transverse strie which terminate in the lowest whirl. The 
aperture is ovate, oblong, narrow, sinuous, white within, and 
narrowed above by a double deposition of calcareous matter ; 
the night lip, striated internally, is thick above, and denticulat- 
ed upon the remainder of its length. ‘The columella, sinuous 
in its middle, is covered by the left lip, which is pretty thick, 
and partially conceals at its base a grooved columellar cal- 
losity. ‘The coloring of this shell is whitish, marked with 
brown or fawn colored spots or bands. 
Length 20 lines. Width 10 lines. 
Inhabits New Holland. 
This shell, the characters of which we have given from an 
old specimen, exhibits somewhat the aspect of a CoLumMBELLA, 
which is owing to the shortening of the spire, and to the narrow- 
ing of the aperture. Some young specimens so little resemble 
the adult, that we might be led to form a new species of it; and 
it is only by attentive observation, that we recognise ‘their af- 
finity. The young (female?) specimens, are generally more 
ventricose, and more elongated ; they have altogether the form 
of the Buccinum of our first section. The aperture is much 
wider, the thickening above, and the scaffold of the lowest whirl 
do not exist; but the pretty prominent transverse strie are seen 
upon that whirl. We have given a figure, pl. 18, fig. 65, which 
approaches to our type. Another (male?) variety, is much 
smaller, and colored upon the lowest whirl with transverse bands 
of a deep brown. 
