PLATE LXXI. 
Goniatites discoidetjs. 
Page 441. 
See Plate 74. 
Pig - . 1. An imperfectly preserved specimen. Tally limestone. Smith’s ledge, Otisco, iV" F. 
Figs. 2, 3. Compressed specimens retaining the test. From the Marcellus shales, at Schoharie, N. F. 
Fig. 4. A small individual retaining its original form. Goniatite limestone. Near Manlius, N. F. 
Figs. 5, 6. Two views of another similar specimen. Goniatite limestone. Near Manlius, N. F. 
Fig. 7. A larger and slightly compressed specimen, showing surface-markings and a few imperfect septal 
lines in the smaller part of the volution. Hamilton group. Near Cazenovia, N. F. 
Figs. 8, 9. Two views of a medium-sized, rotund specimen, showing septal lines, and retaining the test over 
a part of the outer chamber. Goniatite limestone. Near Manlius, N. F. 
Fig - . 10. A large individual, showing imperfectly a few of the suture-lines and the margin of the aperture. 
Hamilton shales. Near Cayuga lake, N. Y. 
Fig. 11. An imperfect specimen showing the usual form, and obscurely the septa of this species. Portage 
group. Portland Harbor, N. F. 
Fig. 12. An individual showing several air-chambers and obscure lines of growth. Hamilton shales. 
Western New York. 
Fig. 13. The internal mould of a less compressed specimen showing several air-chambers. Hamilton 
group. Cazenovia, N. Y. 
Goniatites uniangttlaris. 
Page 444. 
v See Plates 72, 74. 
Fig. 14. Lateral view of the original of Mr. Conrad’s description, showing the general form and air-chambers. 
Hamilton group. Near Moscow, N. F. 
Goniatites unilobatus. 
Page 438. 
Fig. 15. Lateral view .of a small specimen show ing the umbilicus, septal lines, and in part the flattened 
periphery. 
Fig. 16. The opposite side of the same specimen. Hamilton group. Norton’s landing, Cayuga lake, N. Y. 
