CLINTON GROUP. 
93 
Fig. 8 a. Dorsal view of an imperfect specimen. 
Fig. 8 b. A portion of the same enlarged, showing the elevated decussating striae, and another 
portion where these are obliterated by abrasion or exfoliation. 
Fig. 8 c. Dorsal view of a cast of this species, with the aperture and a part of the last volution 
broken off. 
Fig. 8 d. Lateral view of the same specimen. 
Fig. 8 e. Transverse section of the last volution, where broken off. 
Position and locality. This fossil has been found only at Lockport in the chert of the 
lower limestone bed, and but a few feet above the Medina sandstone. 
{Collection of Col. Jewett.) 
488. 9. BUCANIA I BELLA-PUNCTA {n. sp.). 
Pl. XXVIII. Fig. 9. 
Last volution rapidly expanding from a small spire; apex or inner volutions unknown; 
surface marked by small punctures arranged in longitudinal series; form of aperture not 
ascertained. 
In two specimens examined, the back of the outer volution only is visible, the apex or 
smaller extremity is incurved, but the number or extent of the volutions is uncertain. The 
marking on the surface is very peculiar ; but there is no carina, which usually marks species 
of this genus. 
Position and locality. In the dark shale below the iron ore bed in Wolcott, Wayne county. 
396. 7. BUCANIA TRILOBATA. 
Pl. XXVIII. Fig. 10 a, b. 
Reference, B. trilobatus, page 13 this volume. 
This species, which occurs in the Medina sandstone at Medina, appears again in the ferru¬ 
ginous shaly sandstones between the ore beds, and also in a lower position, associated with 
Avicula rhomboidea. A single specimen shows that it attains a large size, though the smaller 
figure is of the usual size of this species, both as it occurs here and in the Medina sandstone. 
It is impossible to ascertain what were the original surface markings, since all the specimens 
seen, either in the Medina sandstone or Clinton group, are casts preserving no remains of the 
original shell. 
Fig. 9 a. A specimen, natural size. 
Fig. 9 b. A large individual, much compressed in a longitudinal direction. 
Position and localities. This species occurs in the central and lower part of the group in 
the several exposures in the neighborhood of Blackstone’s and Wadsworth’s quarries, New- 
Hartford, Oneida county. 
