PLATE CXVI a— Continued. 



CORNULITES MAJOR, Biirnillde. 



Fig. 14. An individual imbedded or adhering to some foreign body for its entire length. 



The several figures under other names given by Barrande may be immature stages of the same 

 species. 



The following illustrations are given by Mr. Nicholson, in his paper on " Ortonia, a 

 New Genus of Fossil Tubicolar Annelides," etc. Geol. Mag., vol. ix, p. 447. 1872 : 



ORTONIA CONICA. 



Page 23. 



Fig. 15. (Fig. 1 — A.) Tubes of Ortonia eoniea, Nieh., growing upon the valve of Stmphomena alternata, 



natural size. 

 Fig. 16. (Fig. B.) A single tube of the same, enlarged. 



Th& following illustrations arc given by Mr. Nicholson, in his " Description of Two 

 New Species of Fossil Tubicolar Annelides." Geol. Mag., vol. x. pp. 54-57, pi. iv, 



figs. 2, 3. 1873 : 



CONCHICOLITES CoRRUGATls. 



Page 23. 



Fig. 17. (Fig. 2 a,*) [= fig. 3 on plate]. "A group of the tubes of Conchieolites corrugatus, growing upon 



Pleurotomaria bilix, natural ^ize." 

 Fig. 18. ( — b,) [= fig. 3a of plate]. "A single tube of the same, enlarged." 



ORTONIA MINOR. 



Page 24. 



Fig. 19. (Fig. 3 — a,) [= 2a of plate]. "Tubes of Ortonia minor, Nich., growing upon a Strophomena, 



natural size." 

 Fig. 20. ( — b.) [= 2a on plate]. "One of the tubes, enlarged." 



* The references to figures of plate iv, Geol. Mag., p. 57, are reversed in the explanation. 



