20 PALEONTOLOGY 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. 



COKNULITES BELLASTKIATUS. 



PLATE CXVI a, FIGS. 12 anil 13. 



Carnulites , Hall. Pat. N. V., vol. ii. p. 353, pi. lxxxv, figs. 112-17. 1S52. 



Tin; 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. 



CORNDLITES CHRYSALIS, H. sp. 

 PLATE CXVI, FIGS. 26-28 



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 llexuous, with regularly transverse but unequally distant, sharply 

 angled or evenly rounded annulations. 



Lower Helderberg group. Locality doubtful. 



CORNULITES TRIBULIS, 11. Sp. 

 PLATE CXVI, PIG. :'." 



Tobe characterized by its gently sinuous outline, low, irregular annulations, 

 and line but conspicuous longitudinal striae. 

 Hamilton group. Hopewell, Ontario county. 



