42 PALEONTOLOGY OF NEW JERSEY. 
Pyropsis REILEYI, n. sp. 
Plate 0, Figs. 11-20. 
Shell of medium size, subglobular or globularly ovate in general form, 
with a moderately elevated spire and subventricose volutions which are 
somewhat rapidly enlarged outwardly; volutions about three in number, 
the last one forming the principal bulk of the shell, and regularly rounded 
from the suture line to the beginning of the very slightly extended anterior 
beak; the inner volutions nearly on a level with each other, but the outer 
one dropping more rapidly below the inner, giving the greater height to 
the spire; volutions regularly rounded, without any angulation in the upper 
part, especially on the last one; aperture large, semilunate, modified above 
on the inside by the projection of the inner volution; cavity left in the cast 
by the removal of the columellar axis very large and marked on the surface 
by a series of circular protuberances which gradually increase in size with 
the growth of the shell; the inner one of four, which can be seen on one 
cast, and which is situated at the inner limit of the last volution, is only 
about a twelfth of an inch in diameter, while the outer one is rather more 
than one-fourth of an inch across; the surface of the shell marked by sev- 
eral strong, coarse, revolving ridges, which have left their imprint only very 
slightly on the surface of the cast; the outer lip of the shell seems also to 
have been slightly expanded, at least near the upper part of the aperture. 
This shell, as shown by the internal casts, differs from the other species 
herein described in its more elevated spire and rounded but less gibbous 
and less ventricose volutions, especially the outer one. The axis has also 
been much stronger in proportion to the size of the specimen, and the 
anterior canal shorter and less distinct. The peculiar flattened nodelike 
protuberances on the columellar lip may be the result of accident. Indeed, 
it would seem almost impossible for the animal to have purposely formed 
and retained such protuberances, as they are not continuous or connected 
but are each one isolated from the others, but their gradual increase in size 
as the shell has developed is a peculiar feature and gives them a meaning 
which they otherwise would not possess. The shell, however, is specifi- 
cally distinct from the others, entirely independent of this peculiarity. 
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