PLATE XXI. 



HoKMOTOMA WiNNiPEGENSE (page 192). 

 Figure 1. View of a large but much compressed specimen, from Little Black Island. 



OONULARIA ASPEEATA (page 201). 



Figure 2. Side view of a specimen from Cat Head. 



II 2a. Portion of the sculpture of another specimen from the same locality, four 

 times the natural size. 



