EXPLANATIONS AND REFERENCES, 



PLATE CCIV. 



Figures magnified 250 diameters. 



PAGE. 



Figs. 1, 2. MICROCOLEUS (Dasygloia) AMORPHA, filaments in normal de- 

 veloped condition, 304 



Fig. 3-6. young plants, spirally coiled, opening gradually, 305 



" 7-9. sheaths with one or more trichomes. . 305 



" 10-12. MICROCOLEUS PULVINATUS, sheaths with one, two or three tri- 



chomes, . . . 305 



Figs. 13, 14. two small thalli, less than natural 



size, .... 305 



