107 
Phaenopora fimbriate canadensis n. var. (Puge 55.) 
o. 17. Outline of the most complete zoarium seen, natural size. 
18. Surface of same, X 8. 
19. Tangential section, X 20, showing the two small pores at the end of the zoGeeia. 
Rochester shale, Grimsby, Ontario. 
Phsenopora Jimbriata James. (Page 55.) 
20. Portion of a tangential section, X 20, introduced for comparison with fig. 19. 
Clinton limestone, Dayton, Ohio. 
Bull. 292— 0G 8 
