ArTtP (MATURE B'' DRH.C.WOQO 



Fig. 1. COSMARIUM LINEATUM 



" 2. C, EHRENBERGII. 



" 3. C. ROSTRATUM, 



" 4. C. DIAN/C, 



" 5. C. PARVULUM, 



6. C. LEIBLEINIt. 



7. TETMEMORUS GIGANTEUS. 



8. TETMEMORUS GRANULATUS, 



9. PLEUROT/ENIUM TRABECULA. 

 10. SPIROT/ENIA BRYOPHILA 



. 11. SPIROT/tNIA CONDENSATA 



13. HYALOTHECA DISSILIENS. 



13. DIDYMOPRIUM 6REVILLII. 



H. COSMARIUM BOTRYTIS. 



15. C, CUCUMIS. 



Fig. 15. EUASTRUM MULTILOBATUM. 



" 17, MICRASTERIAS AMERICANA. 



" 18. COSMARIUM MENEGHENII. 



" 19. SPIROGYRA WE8ERI. 



• 20 COSM.JUNCIDUNI. 



" 21 C. MARGARITIFERUM. 



