PLATE XIX. 



Figures magnified -500 diameters. 



r \..i . 



Fig. 1. COSMARIUM CONTRACTUM, . . . . .68 



" 2. COSMARIUM SINUOSUM, ..... 70 



Figs. 3, 4. COSMARIUM VARIOL.ATUM, . . . . .68 



" 5-6. COSMARIUM PSEUDOPYRAMIDATUM, small variety. (Compare 



Plate XVIII). . . 75 



Fig. 7. COSMARIUM MENEGHINII, four forms, ... 76 



Figs. 8, 9. COSMARIUM SEXANGUJLARE. (Compare Plate LX, fig. 13), . 69 

 Fig. 10. COSMARIUM UNDULATUM, Var. crenulatum, ... 73 



" 11. COSMARIUM NOTABILE, . . . . .72,86 



" 12. COSMARIUM REINSCHII, ..... 73 



Figs. 13, 14. COSMARIUM EXIGUUM, . . . . . .72 



Fig. 15. COSMARIUM ACULEATUM, . . . . .71 



" 16. COSMARIUM LUNATUM, . . . . . .71 



Figs. 17, 18. COSMARIUM BAILEYI; (C. depressurn, Rail.), 69 



" 19,20. COSMARIUM UNDULATUM ; and Var. crenulatum, . . 72 



Fig. 21. " " aeygospore, . . 72 



" 22. COSMARIUM ANSATUM, .... .74 



Figs. 23-25. COSMARIUM HOLMIENSE, varieties, .... 74 



" 26, 27. COSMARIUM TRAOHYPLEURUM, normal state and cell dividing, 79 



" 28, 29. " " transverse and side views, . 79 



Fig. 30. COSMARIUM POLYGONUM, . . . . .71 



" 31. COSMARIUM TINOTUM, . . . . . . (!7 



Figs. 32-34. COSMARIUM TAXICHONDRUM; two forms and lateral view of 



empty cell, . . .77 



" 35, 36. COSMARIUM SMOLANDICUM, .... 72 



Fig. 37. COSMARIUM VENUSTUM, . . . . . .73 



Fsgs. 38-40. COSMARIUM POLYMAZUM, front, end and lateral views, . 76 



" 41, 42. COSMARIUM DONNELLII, . . . . . .77 



" 43-45. COSMARIUM ANISOCHONDRUM, front, end and side views, . 78 



" 46-48. COSMARIUM GAL.ERITUM, three varieties, . . .75 



