PLATE XII. 

 Cyathophyllum Zenkeri, Billings (page 138). 



Figure 1. Longitudinal section of the type specimen, from near Port Colbome, Ont., 

 showing the form of the calyx. 



Cyathophyllum Spenceei, Lambe (page 139). 



Figure 2. A few of the coraUites of the type specimen from Dawson Bay, Lake Winni- 



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

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



Cyathophyllum cespitosum, Goldfuss (page 145). 



Figure 3. A few of the coraUites of the specimen from the Peace River, near the 



mouth of Red River. 

 Figure 3a. Longitudinal section oi one of the coraUites, showing the calyx ; twice the 



natural size. 

 Figure 36. Transverse section of the same ; twice the natural size. 



Cyathophyllum Dawsoni, Lambe (page 147). 



Figure 4. Sidf view of the type specimen from Kennetcook, Nova Scotia. 

 Figure 4a. Longitudinal section of the same. 

 Figure 46. Transverse section of the same. 



Cyathophyllum Pasithea, Billings (page 148). 



Figure 5. Side view of the tyoe specimen from Anse k la Vieille, Baie des Chaleurs, 



Que. 

 Figure 5a. Longitudinal section of the same. 

 Figure 66. Transverse section of the same. 



Cyathophyllum quadeigeminum, Goldfuss (page 153), 



Figure 6. Calyces of a smallspecimen from the "Ramparts,' Mackenzie River. 

 Figure 7. Transverse section of a few coraUites of a larger specimen from the same 



locality. 

 Figure 7a. Transverse section of one of the coraUites ; twice the natural size. 

 Figure 75. Longitudinal section of the same, showing the calyx ; twice the natural size. 



