ORISKANY SANDSTONE. 
47 9 
Cyrtolites? expansus (n. s.). 
Plate CXIY. Fig. 4 & 5. 
Shell obliquely depressed-conical; the apex incurved, but making scarce¬ 
ly, or no more than, a single volution, very rapidly expanding from the 
apex; the body ventricose, subcarinate on the dorsum : aperture nearly 
circular. 
Surface of cast marked by faint transverse ridges and finer longitudinal 
striae. 
I have seen but two specimens of this fossil, the smaller of which is more angular 
in outline, and the dorsal carination stronger; while there are distinct indications 
of two sets of surface markings, the annulations being stronger towards the apex. 
The larger specimen shows no marks of striae, but is contracted near the aperture. 
The smaller specimen has the aspect of Cyrtolites ornatus of Conrad, but is a broader 
and less convoluted shell : the determination, however, is by no means satisfactory. 
Fig. 4 a , b. Anterior and lateral views of the smaller specimen. 
Fig. 5 a, b. Anterior and lateral views of the larger specimen. 
Geological position and localities. In the Oriskany sandstone : Albany and Scho¬ 
harie counties. 
PTEROPODA [U 
Conularia lata. 
Plate CXI. Fig. 1 ; and Plate LXX A. Fig. 3 a, b. 
Shell elongate, extremely broad : sides slightly convex; angles rounded, 
not deeply sulcate, without sulcation on the middle of the sides; trans¬ 
verse ridges curving into the sulci of the angles, and directed gently 
downwards to the middle of each side, where they bend upwards at a 
very obtuse angle : ridges crested by rounded or transversely elongated 
nodes or pustules, which are sometimes punctured at their extremities. 
Longitudinal striae not determinable, except upon the angles. 
