324 
PALAEONTOLOGY OF NEW YORK. 
The three specimens figured are of about the same dimensions, having a 
lenotli of 17 mm. and a height of 13 mm. 
This species resembles N. Randalli , but is a shorter form, broader posteriorly, 
and with a more arcuate cardinal line. 11 has been referred to Tellinomya by 
some authors, but in the specimens described (see fig. 31) there is a distinct 
cartilage pit beneath the beaks, which character does not belong-to Tellinomya 
or Pal^oneilo. A comparison of the specimens figured with the type of the 
species shows their identity. 
Formation and localities. In the sandstones of the Waverly group, at Newark 
and Richfield, 0., and near Hillsdale, and at Battle Creek, Mich. 
NUCULITES, Conrad. 1811. 
Nuculites oblongatus. 
PLATE XLVII, FIGS. 1-12. 
Nuculites oblongata, Conrad. Geol. Sm-v. N. Y., Ami. Rep., p. 50, plate, tig-. S. 1S41. 
“ “ “ Hall. Prelim. Notice Lamelli bran cilia ta; 2, p. 4. 1870. 
“ “ “ “ Pal. N. Y., vol. v, pt. 1. Plates and Explanations: PI. 47, fig-s. 
1-12. 18S3. 
Nueiffla? oblonga. Hall. Geol. Snvv. N. Y., Rep. Fourth Dist., pp. 196-7. 1843. 
Shell somewhat larger than the prevailing forms belonging to this group, elon¬ 
gate-ovate, widest at the anterior end; length usually more than twice the 
height; basal margin nearly straight, sometimes gently arcuate; posterior 
extremity narrow and abruptly rounded. Cardinal line slightly oblique, 
gently arcuate; just anterior to the beaks a small portion of the hinge is bent 
abruptly downward, reaching to the anterior muscular scar. Anterior end 
short and rounded, defined in the cast by the vertical clavicle. 
Valves depressed-convex in the lower and posterior portions, more convex 
on the anterior end and in the umbonal region. 
Beaks at about the anterior fourth, appressed, not rising above the hinge¬ 
line. Umbonal slope broadly rounded and undefined, extending to the post¬ 
inferior extremity. 
Test thick in the upper part of the shell. Surface marked by very fine 
