2® G 
PALEONTOLOGY OF NEW-YORK. 
Specimens of this species are numerous on the worn surfaces of some beds of 
the upper part of the Tentaculite limestone near its junction with the Pentamerus 
limestone, and in the latter rock, often associated with H. antiqua. The species is 
readily recognized among all others of this group, by its general form. 
Fig. 6. A section of a small individual shown on the worn surface of the rock. 
Fig. 7. A larger specimen which preserves some remains of the columcllar lip, the upper 
volutions being entire. 
Geological position and locality. In the tentaculite and pentamerus limestones : 
Helderberg mountains, Schoharie, Carlisle, Manlius, and other places. 
lioxoneina attenuate (n. s.). 
Plate LIV. Fig. 8; and Plate LXVII. Fig. 3. 
Shell fusiform, somewhat rapidly attenuating above the last volution, 
which is ventricose : aperture undetermined. Surface unknown. 
The specimens figured are casts, one preserving four volutions and the other eight. 
Fig. 8. The posterior side of the cast, the aperture being filled with stone. 
Plate lxvii. Fig. 3. A cast of the interior, preserving eight volutions. 
Geological position and locality. In the upper part of the shaly limestone, Herki¬ 
mer county; and in the upper pentamerus limestone, Carlisle, Schoharie county. 
Loxonema litclii (n. s.). 
Plate LIV. Fig. 9, 11 a & 11 b. 
Shell subfusiform, very gradually attenuate : volutions seven or eight 
(six preserved in the imperfect specimen). Surface unknown. 
The specimen fig. 9 is a cast, which is flattened so that the volutions, as presented 
in the figure, give the shell a greater proportional width than the natural form. It is 
much more gradually attenuate than the preceding species, the last volution is less 
ventricose, and the entire shell has been considerably longer. 
Fig. 9. Anterior side of a cast which is flattened in that direction. 
Fig. 11 a. A fragment of the same species from the shaly limestone. 
Fig. 11 b. A similar fragment of a larger individual. 
Geological position and locality. In the shaly limestone : Carlisle, Schoharie 
county; and Helderberg mountains, Albany county. 
