EXPLANATIONS AND REFERENCES, 



PLATE CIX. 



Figures magnified 125 diameters. 



PAGE. 

 Fig. 1-3. ' CLADOPHORA FRACTA, forma viadrina, . . . .125 



" 4-6. CLADOPHORA CRISPATA, forma mtrea, , .126 



" 7-10. " " , " brachydado*, . . .126 



