GEOLOaiO AL STJEYEY OF CANADA. 



CONTRIBUTIONS TO CANADIAN PALEONTOLOGY. 



VOLUME IV. 



Paet II. 



A REVISION OP THE GENERA AND SPECIES OP CANADIAN 



ERRATUM. 

 Page 196 line 13 from ta^, for venusta read Whiteavesiana. 



Colvmnwria (pars), Goldfuss. 1826. Petrefacta Germanise, vol. I, p. 72. 



Favistella, Hall. 1847. Palason. New York, vol. I., p. 275. 



Paloeophyllwm, Billings. 1858. Rep. of Progress for 1857, Geol. Survey of Canada, 



p. 168. 

 Cyathophylloides (pars), Dybowski. 1873. Monograph I., pp. 78 and 123. 

 FavisteUa, Nicholson. 1875. Palaeon. of Ont., p. 21. 



Corailum composite or fasciculate, massive, attached by the base, com- 

 posed of polygonal, subpolygonal or cylindrical corallites whose walls are 

 imperforate and when contiguous are not completely amalgamated. 

 Septa lamellar, generally well developed and alternately long and short, 

 the primaries nearly or quite reaching the centre of the visceral chamber j 

 in one species they are short and of nearly equal size. Tabulse typically 

 horizontal and complete, but sometimes their continuity in the same plane 

 is broken by the septa. When the corallites are separate and cylindrical 

 L— 1 97 



