Faracyclas octerlonii. 

 Fig. 18. Left view of a specimen. Page 212 



Chonetes yandelliana. 



Fig. 19, 20. Ventral and profile view of a specimen. Page 68 



Fig. 30. Transverse section of a specimen. 



Platyceras echinatum. 



Fig. 21. Side view of a specimen. Page 164 



f 



Rhynchonella tethys. 

 Fig. 22-25. Dorsal, profile, front and ventral view of a specimen. Page 83 



Pentamerella thusnelda. 



Fig. 26-28. Profile, dorsal and ventral view of a specimen. Page 51 



Loxonema hamiltoniae. 



Fig. 29. View of a rather perfect specimen. Page 177 



Streptorhynchus arctostriata 

 Fig. 31-33. Cardinal, ventral and dorsal view of a specimen. Page 140 



