Figure 1. 



Figure 2. 

 Figure 2a. 



Figure I!. 



Figure '.jh. 

 Figuie 3/). 



PLATE XXVI. 

 Serpula semiooalita (page 185). 

 The type of this species as seen from above. 



MODIOLA TENUISOULI'TA (])flgU 188). 



Side view of the uiost perfect sjiecimen known to the writer. 

 A portion of tlie test enlarged, to show t])e sculpture. 



Belemnitei.la Manitobensis (page 18'J). 



View ol' llie dorsal side of an innisually well preserved guard of 



tills species, from the Ochre Kiver. 

 View of the ventral side oi' the same specimen. 

 Outline of a natui-al transverse section of the same, at the larger 



end. 



LoRiouLA (Janadensik (])age TOO). 



Figure 4. The ty]>e of this species, throe times the natural size, c, the 

 carina ; l, i,, the lateral plates ; i', one of the terga ; and s, the 

 scuta. With the excejition of tlie carina, the plates not shaded 

 are those of the upper side of the specimen, and those shaded 

 of the lower. 



Figure 4<t. The same specimen, "f natural si/«. 



Ptyohodus PARVin.as ())ago 191). 



Figure 5. J^ateral view of the only specimen known to the writer, three 



times the natural size. 

 Figure ba. Similar view of the same specimen, hut of the natural size. 

 Figure bh. The same tooth as seen from above and enlarged three times. 



Lamna Manitobensis (page 192). 



Figure 6. View of the inner or (convex side of the most perfect specimen of 



this species yet collected- 

 Figure fi«. Profile view of the same tooth. 

 Figure &>. View of the outer or flattened side of the same. 



Knohodus iShumardi (page 194). 



Figure 7. Outline of a dentary bone, with teeth, of a specimen from the 



Rolling liiver. 

 Figure In. Another dentary Iwne belonging to the same specimen, showing 



the external sculptuni of its surface- 

 Figure 1h. One of the eli^ngated fangs at the anterior extremity of the pre- 



maxillary of the same. 

 Figure 7c. Maxillary bone of the same specimen. 



OijAdootclds oooidbntalis (page 195). 



Figure 8. A comparatively narrow scale, which is somewhat pointed at both 

 ends, of a fish which is here provisionally referred to this 

 species. 



Figure 9. A similarly sculptured scale, but of more nearly circular form, of a 

 fish which is also presumed to be referable to this species. 



