LIST OF THE PLATES. 



PLATE LXV. 

 Figs. 1-7. Cosmarium Holmiense 



(P.I) 



,, 812. C. cymatopleurum 



(p. 5) 

 ,, 13-15. C. obtusatum (p. 7) 



PLATE LXVI. 



Figs. 



1-6. Cosmarium venustum 



(p. 8) 



7-8. C. Garrolense (p. 12) 

 9-11. C. Reinscliii (p. 12) 

 ,, 12. C. Niigelianum (p. 14) 

 ,, 13-14. C. ortlwgonum (p. 



118) 



15-17. C. notabile (p. 15) 

 ,, 17A. C. anceps (p. 49) 

 18-19. C. notabile (p. 17) 

 20-27. C. tetragonum (p. 17) 



PLATE LXVII. 



Figs. 1-10. Cosmarium monili- 



forme (p. 20) 



11-13. C. viride (p. 114) 

 14. C. alpestre (p. 24) 

 ,, 15-18. C. connatum (p. 25) 

 19-23. C. pseudoconnatum 

 (p. 26) 



PLATE LXYIII. 



Figs. 1-5. Cosmarium globosum 



(p. 29) 



,, 6-9. C. subarctoum (p. 31) 

 ,, 10-11. C. pericy medium (p. 

 34) 



PLATE LXVIII continued. 



Figs. 12-15. C. pseudarctoum (p. 



32) 

 16-18. C. Novse-Semli&e (p. 



35) 



19-36. C. Regnesi (p. 36) 

 ,, 37-39. C. cymatonotophorum 



(p. 40) 



Figs. 



PLATE LXIX. 



1 . Cosmarium rectangu- 



lum (p. 41) 



,, 2-4. C. arctoum (p. 41) 

 5-9. C. decedens (p. 44) 

 10-13. C. tatricum (p. 45) 

 14-17. C. cmceps (p. 47) 

 18-24. C'. oUiquum (p. 49) 

 25-29. C. Norimbergense (p. 



52) 

 ,, 30-32. C. repandum (p. 53) 



PLATE LXX. 



Figs. 14. Cosmarium rectangu- 



lare (p. 54) 

 5. C. subquadratum (p. 



57) " 



,, 6-8. C. quadratum (p. 57) 

 ,, 9-13. C. plicatum (p. 60) 

 14-16. C. Debaryi (p. 61) 

 17-24. C. exiguum (p. 63) 

 ,, 25-27. C. pseudoexiguum (p. 

 65) 



PLATE LXXI. 



Figs. 12. Cosmarium minimum 

 (p. 66) 



