LIST OF THE PLATES. 



IX 



PLATE LVIL 



PLATE LXI continued. 



Figs. 1-6. Cosmarium Lundellii Figs. 36-37. C. subcontractum 



(p. 138) 

 ,, 7-9. C. pacliydermum 



(p. 139) 

 10. C. Balffii (p. 141) 



PLATE LYIII. 



Figs. 1-3. Cosmarium Balfsii 



(p. 141) 



-C.perforatum (p. 143) 

 ,, 6-7. C. ocellatum (p. 144) 

 ,, 8-12. C. cyclicum (p. 145) 



PLATE LIX. 



Figs. 1-12. Cosmarium undu- 



latum (p. 148) 

 ,, 13-15. C. subundulatum 



(p. 151) 



,, 16-17. C. -fontigenum (p. 147) 

 18-22. CJCucumis (p. 152) 



PLATE LX. 



Figs. 1-4. Cosmarium Subcu- 



cumis (p. 155) 

 5-10. C. microspliindum 



(p. 156) 



,, 11. C. morsmn (p. 157) 

 12-17. C. Pliaseolus (p. 158) 

 18-19. C. tumidum (p. 160) 

 ,, 20. C. Trafalgaricwn 



(p. 161) 

 ,, 21-23. C. melanosporum 



(p. 162) 

 24-2 /. C. aspliterosporum 



(p. 163) 



PLATE LXI. 



Figs. 1-2. Cosmarium incon- 

 spicuum (p. 164) 

 ,, 3-11. C. bioculatum (p. 165) 

 12-15. C. tenue (p. 167) 

 16-20. C. tinctum (p. 168) 

 21-22. C. Havvm (p. 170) 

 23-35. C.'contractum (p. 170) 



(p. 174) 



,, 38. C. subaversum (p. 



174) 



PLATE LXII. 



Figs. 1. Cosmarium tetra- 



cliondrum (p. 175) 

 2-10. C. depressum (p. 176) 

 ,, 1113. C. subquadrans (p. 



178) ' 



,, 14-16. C. succisum (p. 179) 

 17-18 --C.retusiforme (p. 180) 

 ,, 19. C. sv.br etusi for me (p. 



180) 



20-25. C. Hammeri (p. 181) 

 ,, 26-27. C. Nymannianum (p. 



184) 

 28-30. (7. trilolulatum (p. 



185) 



PLATE LXIII. 



Figs. 1-10. Cosmarium granatum 



(p. 186) 

 11-15. C. Pokornyanum (p. 



190) 

 ,, 16-17. C.pseudatlantlioideum 



(p. 191) 

 ,, 18-23. C. subtumidum (p. 



192) 



24-25. C. galeritum (p. 194) 

 ,, 26-30. C. pseudonitidulum 



(p. 195) 



PLATE LXIY. 



Figs. 1-3. Cosmarium nitidu- 



lum (p. 197) 

 4. C. canaliculatum (p. 



198) 

 ,, 5-8. C. pyramidatum (p. 



199) 

 ,, 9-13. C. pseudopyramida- 



ttnn (p. 201) 



14-16. C. variolatum (p. 203) 

 17. Euastrum pulcJiellum 



(p. 46) 



