90 
Figure 1. 
Figure 2. 
Figure 3. 
Figure 4. 
scar of 
Figure 5. 
Figure 6. 
Figure 7. 
Figure 8. 
Figure 9. 
Figure 10. 
Figure 11. 
Plate III 
Prasopora simulatrix orientalis Ulrich 
Vertical section. 
Tangential section. 
Tetradium cylindricum n. sp. 
Vertical section. (Page 46.) 
Lingula, narrawayi n. sp. 
Interior of the largest pedicle valve found, showing the broken 
the septum and the acuminate beak, X 3. (Page^49.) 
Largest specimen of brachial valve, X 3. 
Average specimen of pedicle valve, X 3. 
Strophomena canadensis n. sp. 
Pedicle valve, X 2. (Page SO.) 
Rafinesquinq, rugosa n. sp. 
Pedicle valve, X 2. (Page 51.) 
Brachial valve, X 2. (Page 51 ) 
1 > 
Rqfinesquina sp. undt. 
Showing three septa, natural size. (Page 52.) 
Another specimen showing three septa, natural size. (Page 52.) 
