210 PALEONTOLOGY OF NEW JERSEY. 
the middle of the length of the aperture. Surface of the shell smooth, or 
marked only by lines of growth. 
The species very closely resembles the living V. scapha in size, form, 
and proportions. The folds on the columella are similar in distance and 
probably the same in number. The specimen showing them is too imper- 
fect to determine their exact number positively, but four only are satisfac- 
torily shown. It differs from V. vesta herein described in its more angular 
and obconical form, and can not be easily mistaken for it. 
Formation and locality: In the uppermost layers of the Upper Green 
Marls, at Shark River, New Jersey. From the collection at Rutgers College. 
VOLUTA (AMORIA) VESTA, 0. Sp. 
Plate xxxu1, Figs. 4-6. 
Shell large and somewhat cone-shaped, being largest at the base of the 
spire and irregularly decreasing in size below, with a very little swell or 
convexity on the sides of the body volution, relieving the otherwise strictly 
conoidal form. Spire low-conical, the apical angle being about 90°, and 
the volutions of the spire barely convex between the sutures, which are 
only moderately indicated in the cast, but which appear to have been 
slightly callus in the shell. Aperture large, apparently contracted below. 
Columella moderately strong, but little if at all callus and marked by four 
rather strong and very distant folds, with flattened spaces between, which 
in the specimen figured is fully three-eighths of an inch wide between the 
upper ones. The upper fold is nearly horizontal and the lower very 
oblique, being nearly vertical and nearly at the base of the columella. 
Surface of the shell smooth or marked only by fine lines of growth parallel 
to the margin of the aperture. 
This species is peculiar for its conoidal form and peculiar columellar 
folds, these latter being very unusually distant and isolated in their posi- 
tion. The surface of the shell is entirely destitute of any longitudinal or 
vertical folds or undulations of the surface, and I do not think there has 
been any markings of any kind other than the lines of growth. The 
shell has apparently attained a very fair size, the specimen figured having 
measured fully 5 inches in length when perfect. The shell has had the 
aw 
