46 



Fig. 16. Rhynclionella cuneato, Dalman. — Impression of 

 the ventral (?) yalve. Zeehan. 



17. RIn/nchonel/a capa.r, Conrad. — Cast taken from 



the impression of two valves in juxta-position — 

 X 2. Heazlewood. 



18. The same. — A ventral valve — x 2. Heazlewood. 



19. Rhynclionella borealis, Schlotheim ? — Cast of the 



ventral valve taken from an impression — x H. 

 Zeehan. 



20. The same. — Zeehan. 



21. Eunema Montgomeri% Eth. fil. — Showing general 



characters. Zeehan. 



22. The same. — A smaller example. Zeehan. 



23. Murchisonia, sp. ind. — Cast taken from an im- 



pression. Zeehan. 



24. Lophospira? sp. ind. — Cast taken from an im- 



pression. Zeehan. 



25. RapJmtoma? sp. ind. — Intei'nal cast, apical vievr. 



Zeehan. 



26. The same. — Side view showing the keeled whorls. 



Zeehan. 



27. Tentaculites, sp. ind.- — Cast taken from an im- 



pression — X 6 (about). Heazlewood. 



28. Leplodomus? nuciformis, Eth. fil. — Left valve — 



x3. Zeehan. 



