PLATE XL VII I. 



Figures magnified ~)l)0 diameters. 



PAGE. 

 Figs. 1, 2. STAUBASTRUM WOLLEANUM, ..... 1(53 



" 3, 4. STAURASTRUM CORNUTUM, . . . . .158 



" 5, 6. STAURASTRUM BACILL.ARE, . . . . .132 



" 7, 8. STAURASTRUM MINNESOTENSE, . . . . 156 



" 9, 10. STAURASTRUM PSEUDOCRENATCM, . . . .139 



" 11-13. STAURASTRUM MINNEAPOLIENSE, .... 141 



" 14, 15. STAURASTRUM CAL.YXOIDES, ..... 158 



" 16, 17. STAURASTRUM ERASUM, ..... 139 



" 18-20. C'OSMARIUM INFLATUM, . . . . . .67 



" 21, 22. STAURASTRUM XIPHIDIOPHORUM, .... 155 



" 23-25. t'OSMARIUM NORDSTEDTII, ... .80 



" 26, 27. COSMARIUM SPHALEROSTICHUM, .... 76 



" 28, 29. COSMARIUM BRAUNII, forma MAJOR, . . . 72A 



" 30, 31. COSMARIUM SENDTNERIANUM, . . . 72A 



Fig. 32. COSMARIUM PERFORATUM, . . . . .65 



Figs. 33, 34. COSMARIUM LOBATULUM, . . <>> 



" 35, 36. COSMARIUM LOEVE, . . . . . 7 2 A 



Fig. 37. COSMARIUM CIRCULARS, ..... 68 



