110 PALEONTOLOGY OF NEW JERSEY. 
Family COLUMBELLID4. 
Genus AMYCLA H. and A. Adams. 
AMYCLA COMMUNIS. 
Plate x1x, Figs. 12-15. 
Amycla (Astyris) communis Conrad: Proc. Acad. Nat. Sci. Phila., 1862, p. 287 and p. 
564. 
Columbella lunata (Say.) Tuomey and Holmes: Plioe. Foss. South Carolina. 
Columbella communis (Con.) Heilprin: Proc. Acad. Nat. Sci. Phila., 1887, pp. 398 and 
403. 
“Small, whorls six or seven, smooth and polished; spire rather elevated; 
body whorl abruptly rounded in the middle, or subangular; submargin of 
labrum minutely dentate.” (Conrad.) 
The largest individual of this species which I have seen from New Jer- 
sey is scarcely three-eighths of an inch long. It is a somewhat robust 
shell, with the spire, above the aperture, once and a half as long as the 
aperture itself. The volutions are but slightly convex between the sutures, 
being flattened in the direction of the spire, the last one being quite angular 
at the upper part of the aperture. The outer lip is thickened and swollen 
externally, and denticulate within when complete, some specimens showing 
as many as eight ridges; the columellar lip is also sometimes slightly callous, 
and often shows a small tubercular callus at the upper angle, while below 
and on the beak portion of the last volution there are distinct spiral 
impressed lines. General surface smooth and semipolished. Nucleus 
slightly tubercular, although seldom seen. On quite a number of the 
specimens color lines are distinctly observed. These are vertical, brownish 
in color, narrow, with the intervening spaces about twice as wide as the 
line, the line being continuous and vertical and but slightly wavy, and not 
interrupted by spiral bands as in C. lanata Say, from which it differs very 
materially in general form and in being much larger. 
Formation and locality: In the gray micaceous marls of the Miocene at 
Shiloh and Jericho, N. J., and given by Tuomey and Holmes from South 
Carolina. The specimens used are from the collections of the National 
Museum. 
