478 



Fossils of the Hamilton Grovp. 



Fig. 16. Cyathophyllum distortum (Hall ) 

 Fig. 17 Cyathophyllum rectum (Hall.) 



Fig. 16 (7. distortum. " Coral elongated irregularly cyliudro-tur- 

 binate, a little curved. Epitheca strong ; folds of growth very 

 much projecting and sharp-edged ; radiating lamellae 26 to 34 

 in the adults. The general form varies greatly, some specimens 

 are slender and long, others thick and short." 



The length of this species is from one to'^two inches, diameter 

 I to f of an inch. It is remarkable for the sharp inflections 

 occasionally exhibited, some of the specimens are bent almost at a 

 right angle. Abundant in western Canada. 



Cyathophyllum from the Greek knathus, a cup. 





iiiflfliiytuBiil 







Fig. 1 8. Stromhodes simplex, (Hall.) 



Views of side and interior of the cup. 

 Fig. 17. a rectum. "Coral turbinated, elongated, straight, 

 or slightly curved ; folds of growth very feeble ; ribs simple, rather 

 large, straight, sub-equal, corresponding to the interseptal spaces^ 



