20 
PALAEONTOLOGY OF NEW YORK. 
at Lockport, is suggestive of the same stage of development as that represented 
by figures 1-4 of C. proprius, and it may prove to have a similar relation to 
the larger individuals from this horizon in the State of New York. C. nodosus, 
Ringueberg {loc. cit.), p. 149, plate iii, fig. 7, is a very small form from the same 
formation, the surface of which is without annuli, but is covered with faint 
tubercles. 
Niagara group. Waldron, Indiana. 
CoRNULITES BELLASTRIATUS. i 
PLATE CXVIA, FIGS. 12 and 13. 
Corwwlites -, Hall. Pal. N. Y., vol. ii, p. 3.53, pi. Ixxxv, figs. 12-17. 1852. 
The earliest conditions of this species have not been observed. In the most 
nearly entire individual known, the base is slender and somewhat rapidly 
attenuate. The annulations become subdued or obsolescent at a comparatively 
early period of growth, and in old specimens are often entirely obsolete. Fine 
longitudinal striae are early developed and continue. 
CORNULITES CHRYSALIS, 11. Sp. 
PLATE CXVI, FIGS. 20-28. 
This species is characterized by its regular and closely set annulations, which 
present the appearance of inverted, ensheathed, truncated cones. 
Lower Helderberg group. Near Clarksville, Albany county. 
CoRNULITES CINGULATUS, 11 . Sp. 
PLATE CXVI, FIG. 29. 
Tube very Ilexuous, with regularly transverse but unequally distant, sharply 
angled or evenly rounded annulations. 
Lower Helderberg group. Locality doubtful. 
CoRNULITES TRIBULIS, 11. Sp. 
PLATE CXVI, FIG. 30. 
Tube characterized by its gently sinuous outline, low, irregular annulations, 
and fine but conspicuous longitudinal striae. 
Hamilton group. Hopewell, Ontario county. 
