152 



vertice, c. eadem a latere (^^7i)) d. adumbratio cellulæ 



4. G. subpunctulatum Nordst. forma, a. cellula a fronte, b. eadem 

 a vertice 



5. G. Blytii Wille * Hoffii nov. subspec. a. cellula a fronte, lt>. semi- 

 cellula a vertice, c. cellula a latere, d. semicellula a basi (^^7i)- 



6. G. Danicum nov. spec. a. cellula a fronte, c. eadem a latere, 

 semicellula a vertice (^^7i)- 



7. G. prægrande Lund, verrucas, a. a latere, b. a vertice (^^7i)- 



8. Staurastrum aculeatum * cosmospinosum nov. subspec. a. et b^ 

 cellulæ bifariam positæ a fronte, c. semicellula a vertice, d. eadem 

 a basi (^^7J. 



9. St. bicorne Hauptfl. a. cellula a fronte, b. semicellula a vertice,. 

 c. eadem a latere (^^Vi)* 



10. St. quadrangulare Bréb. a. cellula a fronte, b. a vertice (^^7i)' 



11. Xanthidium Brébisonii Ralfs ß basidentatum nov. var. a. cellula a 

 fronte, b. semicellula a basi (^^7i)- 



