ADDENDA ET CORRIGENDA. 



P. 1, bottom line. For Encrinus Godoni read Encrina Godoni. 



P. 14, Explanation of Fig. II. For ventral read radial. 



P. 43, line 26. For Pentremites robustus read Pentremites hemispheric-its. 



P. 48, lines 13, 18. For P. Godoni read P. Burlingtonensis. 



P. 94, line 21. For P. Godoni read P. Burlingtonensis. 



P. 123, line 3 from the bottom. For G. McCyi read G. McCoyi. 



P. 126, line 12. For Metablastus Meekianus read Triccelocrinus Meekianus. 



P. 138, line 17. The reference figure 3 after Elceacrinus Canadensis should be deleted. 



P. 140. In the list of Blastoids occurring in the Calcaire de Ferrofies add Pentremitidea 



Lusitanica to the Pentremitidce, and Phanoschisma Archiaci and P. Verneuili to 



the Codasteridse. 

 P. 147, line 6 from bottom. For 1842 read 1813. 

 P. 169, line 5. For Pentremitidea read Pentremitideea. 

 P. 170, line 16. For Orophocrinus inflatus read Orophocrinus verus. 

 P. 171. To the list of species of Pentremitidea, add 



Pentremites Pailleti, de Vern. Lower Devonian; Leon and Asturias, Spain. 

 P. 174, line 14. For Pentremites Eifelensis read Pentremitidea Eifelensis. 

 P. 181, line 20. For Pentremites gracilis read Pentatrematites gracilis. 

 P. 188, line 11. For M. oblongus read M. elongatus. 

 P. 238, line 19. For D. D. Owen read Owen & Shumard. 

 P. 264, line 3 from the bottom. For C. gracile read C. gracilis. 



