PLATE XL 



Cardiopsis tenuicostata (page 307). 



Figure L Side view of a large but imperfect left valve of this species, 

 from Dawson Bay, two miles west of 8alt Point. 



Figure 2. Himilai' view of a smaller left valve from Dawson Bay, at the 

 mouth of the Red Deer River. 



Cypricardinia planulata ? Var. (page 309). 



Figure 3. Gutta perclia impression from a natural mould of the exterior 

 of a left valve collected at Devils Point, Lake 

 Winnipegosis. 



Cyprk^ardella bellistriata (page 308). 



Figure 4. \ comparatively large but imperfect oast of the interior of 

 the closed valves of a specimen from Point Wilkins, 

 Dawson Bay : lateral view, shewing the right valve. 



Figure 5. Side view of a smaller and more perfect but in (jther respects 

 •similar specimen from the saine locality, shewing the 

 contour of the left valve. 



An(.ii)ontopsis affinis (page 303). 



Figure 6. Side view of a cast of the interior of a left valve, frou) Devils 

 Point, Lake Winnipegosis. 



Glossites ]\1 ANiT(JiiENSi.s (page 310;. 



.Figure 7. Side view of the only specimen collected, from Pentamerus 

 Point, Lake Manitoba, shewing the left vahe. 



C'VPRIOARUELLA PRODUCTA (page 309). 



Figure 8. The wa.x impression of a natural mould of the e.xterior of a 

 left valve from Dawson Bay, at the mouth of Steep 

 Rock River, referred to in the text. Side view. 



