PLATE XIX E— Continued. 



Lichas (Ceratolichas) DRACON. 



Page 85. 

 Fig. 14. An imperfect eephalon, showing the transverse frontal margin, the short frontal glabellar lobe, 

 the four spine-bases on the posterior extremity of this lobe and the spine-bas^s near the eye- 

 nodes. 

 Fig. 15. A profile view of the same, the outline of the eephalon being restored, and showing in restoration 

 the probable length of the four pairs of spines. 



Corniferous limestone. Schoharie, Schoharie anility. 

 Fig. 16. A portion of the frontal lobe of the glabella enlarged to two diameters; showing part of one 



spine of the outer pair, tin- bases of the other one and of the inner pair. 

 Fig. 17. The same, in profile. 



Corniferous limestone. Schoharie, Schoharie county. 

 Fig. IS. A very small glabella, retaining the inner pair of spines and portions of the others. 

 Fig. 18b. The same enlarged to three diameters. 



Corniferous limestone. LeRoy, Genesee county. 



LlCHAS (I)ICRANOGMUS) PTYONUKL'S. 

 Page S6. 

 Fig, 19. The intra-sntural portion pfithe eephalon, enlarged to two diameters ; showing the form and 

 character of the glabellar Lojbes and furrows. 



Niagara group (Coralline limestone). Schoharie, Schoharie county. 

 Fig. 20. A pygidium, apepmpanied !>>' the last thoracic segment, enlarged to two diameters. 



Niagara group (Coralline limestone). Schoharie, Schoharie county. 

 Fig. '-'I. A smaller but more perfect pygidium, enlarged to two diameters, preserving the margin entire, 

 and showing the number and character of the marginal spines. 



Niagara group (Coralline limestone). Schoharie, Schoharie county. 



