46 
PALEONTOLOGY OF NEW YORK. 
mediate between that and L. sinuosa, while the strife are curved as in the latter 
species. The figures of Phillips represent the striae a little curved backwards 
at their upper extremities, with an enlargement just below,—features which 
our species does not possess. 
Formation and localities. In shales of the Hamilton group, at Seneca and 
Cayuga lakes; at Eighteen-mile creek; and more commonly in the shales east 
of Cayuga lake, at Delphi and other places. 
Loxonema Bellona. 
PLATE XIV, FIGS. 3, 4, 5. 
Loxonema Bellona, Hall. Illustrations of Devonian Fossils: Gasteropoda, pi. 14. 1876. 
Loxonema sp. ? Hall. Illustrations of Devonian Fossils: Gasteropoda, pi. 14. 1876. 
Shell turreted, robust, somewhat rapidly expanding from the apex. Volutions 
in the entire shell probably nine or ten, convex, the last one ventricose; 
columellar lip somewhat rapidly contracted at the base of the volutions, 
and pointed below. 
Surface marked by distinct, closely arranged, elevated striae, which, for a 
short distance below the suture, are nearly vertical, and then, bending 
gently backwards, are recurved upon the periphery at about the middle of 
the volution. On the last volution the striae are very abruptly recurved 
to the columellar lip. 
The specimens examined are all imperfect, and essentially casts of the 
interior, preserving portions of the exterior shell. The general form resembles 
the L.subattenuata of the Schoharie grit; but the volutions are more rotund and 
the last one more ventricose; these features appear more conspicuous in 
the comparison of specimens than in the figures. This form also resembles the 
L. teres , but is more rapidly tapering, and the proportion of width and height 
of the volutions is also a distinctive feature. 
Formation and locality. In some calcareous layers of the Hamilton shales at 
Bellona, Yates county, N. Y. 
