PLATE XXII. 



Figures magnifled 500 diameters. 



Page. 

 CosMAiuuM Eloisbanum, front and end views, . 92 



CosMABiuM TBTPLicATOM, front, lateral and end views, and 



zygospore, . 79 



CtoSMAKItrM SPEC1OS0M, . .95 



" " smaller form, . 95 



Figs. 10, 11. CosMARiuM PYCNocHONDBUM, front and lateral views, 97 



" 12, IS. CosMAKiDM PECTiNorDES, front and side views, 96 



" 14, 15. CosJiABiUM SPKciosuM, Small variety, . 95 



" 16-1 8. CosMAKiuM PSEUDOPECTiNOiDES ; two in front view, one in side 



view, . . 96 



Fig. 19. COSMABIUM NASUTUM, . .96 



" 20. CosMARiUM SUBCKENATDM. (Compare Plate XXI, figs. 6, 7), 91 



Figs. 21-22. CoSMAKrcM badiosum, . . .97 



" 23, 24. CoSMABiUM BIREME, in three views, front, side and end^ 89 



" 25, 26. CosMARiuJi MABQABiTDM, in three views, . . 88 

 Fig. 27. ' " zygospore, with the remains of the 



semi-cells attached, . . 88 



Figs. 28-30. CosMABiDM TITHOPHOBOM, from three points of view, . 88 



" 31-33. CosMARiUM Blyttii, front, side and end views, . 95 



