32 
NERITA sinuosa. 
TAB. CCXYVII.---Fig. 2. 
Spec. Cuar. Obtuse, uneven; spire short, with 
convex whorls ; aperture with a rounded sinus 
near the base, and an angular sinus above the 
middle. 
A rounp the base of the last whorl is a kind of lobe, 
that terminates in a sinus in the edge of the aperture. 
In old shells the last formed turn is obtusely carinated, 
and they have a notch in the lip. The whole surface is 
strongly marked with lines of growth, that shew the 
gradual increase of this notch as they approach the edge 
of the aperture. The columella is broad and flat, but I 
have not been able to expose enough to learn whether 
the edge be toothed or not. 
Several specimens have been in my cabinet four or five 
years, for which I am indebted to Miss Benett, who 
collected them at Chilmarsh, near Tisbury, Wilts. They 
are converted into crystallized carbonate of Lime, and 
are filled with chalky marl, mixed with white and green 
sand. 
