22 PLATE XL [Assembly 



Fossils of the Upper Helderberg group. 



1. Eensseljeria (Meganteris) elongatus (wrongly called M. 



ovoides on p. 61). 



2. Same, end view. 



3. Strophomena undulata. 



4. Orthis lenticularis, lower valve and front outline. 



5. Atrypa reticularis. 



6. Strophomena lineata, enlarged. 



7. Dalmania selenurus : separate fragments, head and tail. 



8. Cyrtoceras undulatus. 



9. ICHTHYODORULiTE, a defensive fin-bone of a devonian fish. 





