WISCONSIN PHYTOPLANKTON 215 



PLATE 30. 



Page 



Figs. 1-2. Lagerheimia citriformis (x 1000) 130 



Figs. 3-4. Lagerheimia su'bsala (x 1000) 130 



Figs. 5-7. Lagerlieimia Droescheri (x 1000) 131 



Figs. 8-9. Lagerheimia longiseta (x 1000) 130 



Figs. 10-12. Lagerheimia longiseta var. major (x 1000) 130 



