PLATE LXIV. 



Figures iiiimiiilicil :**\ dianirHT.-. 



I' M.I . 

 Fig. 1. 1'KNir.M Dii;iTus, .... .34 



Kis. 2, 3. STAURASTKUM HRF.VISIMNA, front and end views, . . 134 



" 4.5. STAURASTRUM iNoiN-nni-M, . . . 137 



' 6,7. ST.U-K \STKI-.M nri-i.KX, . . . . ,164 



Fig. 8. HYALOTHETA UNUULATA, . . . . .23 



Figs. 9, 10. CLOSTERIUM STRIGOSUM, two /.ygos pores witli empty evils at- 



taolietl, . . . . .44 



Fig. 11. EUASTRUM MULTILOBATUM, . . . 107 



FigS. 12, 13. MlCRASTERIAS COXFERTA, . . . . . 12" 



" 14, 15. ('OSMARIUM EXCAVATUM, ..... 85 



Fig. 16. DOCIDIUM CORONULATUM, ..... .">3 



" 17. PEDIASTRUM SIMPLEX, ..... 168 



" 18. PEUIASTRUM STURMII, . . . . . .168 



' 19. PEUIASTRUM SI.MI'J.KX, Var., . . . .168 



" 20. PEDIASTRUM DUODENARIUS, . . . . . 1(>S 



" 21. PEDTASTHTM FORCIPATI'M. ..... lt>9 



Figs. 22, 23. PEUIASTRUM EHRENBERGII, . . . . .170 



Fig. 24. PEDIASTRUM TETRAS, . . . . .170 



Figs. 25, 26. PEUIASTRUM EHRENBERGII, . . . . .170 



Fig. 27. variety, . . . 170 



" 28. PEUIASTRUM ANGULOSUM, . . . . .162 



" 29. PEUIASTRUM BORYAHUM, . . . . .169 



Figs. 30, 31. PKDIASTRUM FORCIPATUM, ..... 109 



Fig. 32. PEUIASTRUM BORYANUM, ..... Kin 



Figs. 33, 34. PEUIASTRUM PERTUSUM, . . . . .169 



Fig. 35. " " Var. brachylobum, . . 170 



" 36. PKDIASTRUM MUTICUM, . . . . . . 16!i 



" 37. PEDIASTRUM ANGULOSUM, variety, ... 162 



