CONTEXTS OF VOL. V. 



ADDITIONAL BIBLIOGRAPHY .... 

 FAMILY DESMIDIACE^:. 



SUB-FAMILY II. PLACODERM^E. 



TRIBE 5. COSMARIE^E. 



GENUS 18. STAURASTRUM (concluded) 



19. COSMOCLADIUM 



20. OOCARDIUM 



21. SPH^EROZOSMA 



22. ONYCHONEMA 



23. SPONDYLOSIUM 



24. HYALOTHECA 



25. DESMIDIUM . 



26. GYMNOZYGA 



PAGE 

 xvii 



ADDENDA 

 INDEX 



33 



S3 



33 



33 



33 



33 



33 



1 



. 197 



. 203 



. 206 



. 215 



. 219 



. 228 



. 240 



. 254 



. 258 

 271 



/ <\ 



