DESCRIPTIONS OF THE PLATES. 



411 



DESCRIPTION OF PLATE IX. 



Corethromyces Cryptobii Thaxter. 



Fig. 1. Mature individual. The inner main appendage broken off at its base, the secondary 

 appendages more or less broken. A 12. 



Fig. 2. Young individual slightly crushed to show three main appendages with young peri- 

 thecium terminated by remains of a branched trichogyne. A 12. 



Corethromyces jacobinus Thaxter. 

 Fig. 3. Mature individual. A 12. 



Fig. 4. Immature individual, showing position of antheridial branches. A 12. 

 Fig. 5. Single antheridial branch with two discharged antherozoids. D 12. 



Corethromyces setigerus Thaxter. 

 Fig. 6. Nearly mature individual. The tips of the appendages are broken off. A 12. 



Rhadinomyces pallidus Thaxter. 



Fig. 7. Mature individual, developing a second perithecium. A 12. 

 Fig. 8. Mature individual of typical form. A 12. 

 Fig. 9. Antheridial branch. D 12. 



Fig. 10. Mature individual of larger form (var. a), the branches mostly sterile. A 12. 

 Fig. 11. Spore of fig. 10. D 4. 



Rhadinomyces cristatus Thaxter. 

 Fig. 12. Mature individual with two perithecia, one immature. A 12. 



Fig. 13. Terminal portion of mature perithecium seen in optical section, the canal-cells having 

 been destroyed. ^ 4. 



Fig. 14. Antheridial branch with discharged antherozoids. D 12. 

 Fig. 15. Spore. D 4. 



Idiomyces Peyritschii Thaxter. 



Fig. 16. Mature individual with two perithecia, the appendages all broken from the right 

 side. A 12. 



Fig. 17. Mature individual seen from opposite side. A 12. 

 Fig. 18. Antheridial appendage viewed laterally. D 4. 



Fig. 19. Antheridial appendage ; face view, showing three rows of antheridia. D 4. 

 Fig. 20. Sterile appendage. D 4. 

 Fig. 21. Spore. D 4. 



Rhadinomyces cristatus Thaxter. 



Fig. 22. Young individual, showing spinous process at base of primary appendage. D 4. 

 Fig. 23. Antheridial branchlet of three superposed antheridia, showing structure in optical 

 section. 4. 



