PLATE XI. 



Cyathophyllum Euryone, Billings (page 135). 



Figure 1. Side view of the type specimen from the "Jumpers," Anticosti, Que. 

 Figure la. Longitudinal section of the same. 

 Figure 16 . Transverse section of the same. 



Cyathophyllum Wahlenbergii, Billings (page 136). 



Figure 2. A few of the corallites of the type specimen from East Point, Anticosti, 



Que. 

 Figure 2a. Longitudinal section of one of the corallites ; twice the natural size. 

 Figure 26 . Transverse section of the same ; twice the natural size. 



Cyathophyllum interruptum, Billings (page 137). 



Figure 3. Side view of the type specimen from Anse a la Barbe, Baie des Chaleurs, 



Que., one-half the natural size. 

 Figure 3a. Longitudinal section of the upper part of the same, showing the calyx. 

 Figure 36 . Transverse section of the same. 



Cyathophyllum Pennanti, Billings (page 138). 



Figure 4. Some of the corallites of the type specimen from Anse au Gascon, Baie des 



Chaleurs, Que. 

 Figure 4a. Longitudinal section of one of the corallites ; twice the natural size. 

 Figure 46. Transverse section of the same ; twice the natural size. 



Cyathophyllum Thoroldense (page 147). 



Figure 5. Side view of the type specimen from Thorold, Ont. 

 Figure 5a. Longitudinal section of the same. 

 Figure 56. Transverse section of the same. 



