EXPLANATIONS AND REFERENCES, 



PLATE CXXIV. 



Figures magnified 250 diameters. 



PAGE. 

 Fig. 1-4. BOTRYCOCCUS BRAUNII, smaller and larger clusters, . .195 



a 5-7. BOTRYDINA VULGARIS, younger and older thalli, . . 195 



Figs. 8, 9. PALMODACTYLON VARIUM, . . . . . 189 



Fig. 10-23. HORMOSPORA forms ... . (137, 133), 189 



