PLATE CXXVII. 



GONIATITES AMPLEXUS. 



Page 39. 

 Fig. 1. Lateral view, showing the chamber of habitation, comprising- nearly an entire volution, the surface- 

 markings, one of the revolving ridges on the periphery and the direction of the sutures as ex- 

 hibited in the last septum. 



Tully limestone. L«d.i Landing, Seneca lake. 



GONIATITES COMPLANATUS. 



Page 40. 

 Fig. 2. An illustration, similar to fig. 8, pi. 70, Pal. N. Y., vol. v, pt. ii, to show the direction and disposi- 

 tion of the septal lines. 

 Hamilton group. Oeneseo, Livingston county. 



GONIATITES VANUXEMI. 

 Page 39. 

 Fig. 3. View of the septa of two chambers of adjacent volutions, showing the transverse section of the 

 tube, the size of the siphuncle and the embracing of the volutions. 

 Goniatite limestone. Manlius, Onondaga' county. 

 Fig. 4. Lateral view of a small example, showing the umbilicus ami inner volutions. 



Goniatite limestone. 

 Fig. 5. Id. Preserving the bulb which forms the initial extremity of the tube. 



Goniatite limestone. 

 Fig. 6. Ventral view of a young individual, showing the double revolving ridges of the periphery and the 

 ventral lobes of the septa. A portion of the test is preserved with the broad sinus in the stria? 

 over the ventrum. 



Goniatite limestone. Manlius. Onondaga county. 



GONIATITES VANUXEMI, Vlir. NOD1FERUS. 

 Page 39. 

 Fig. 7. Lateral view of a specimen found in the shales of the Hamilton group, showing the surface strise 

 and septa, and a row of rounded nodes on the umbilical side of the lateral face. 

 Hamilton shales. Cherry Valley, Otsego county. 



GONIATITES PaTERSONI. 



Page 40. 

 Fig. 8. Ventral view of a fragment, showing the ventral lobes with the line of the siphuncle, and the dis- 

 position of the septa. 

 Fig. 9. A septum drawn from the reverse of the end of the preceding, showing the lobes and saddles. 

 Portage group. Paterson's Creek, Livingston county. 



GONIATITES UNIANGULARIS. 



Page 39. 

 Fig. 10. An enlargement to three diameters, of a specimen showing the direction of the septal lines. The 

 air-chambers covering the smaller part of the visible volution have been removed, leaving the 

 inners walls of the chambers exposed, which are striated by peculiar wrinkled or interrupted 

 lines of organic nature. 



Hamilton group. Pratt's Falls, Onondaga county. 



GONIATITES DISCOIDEUS. 

 Page 39. 

 Fig. 11. Lateral view of a specimen, showing the surface markings, the form of the aperture, and the 



striated filling or area around the umbilicus. 

 Fig. 12. Id. An enlargement of the umbilical area, showing more in detail the character of the concentric 

 interrupted striae. 



Hamilton group. Western New York. 



