DESCRIPTIONS OF THE PLATES. 
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DESCEIPTION OF PLATE XL 
Sphaleromyces occidentalis Thaxter 
Fig. 1. Mature individual. A 12. 
Sphaleromyces Lathrobii Thaxter. 
Figs. 2, 3* ]\Lature individuals. A 12. 
Fig. 4. Younger individual, more higlily magnified. D 4. 
Fig. 5. Spore. D 4. 
Fig. 19. Terminal portion of appendage of a young individual, showing tliree antlieridia and 
spnious process. ^^ 4. 
Compsorayces vertkiUatas TLaxter. 
Fig. 6. ^Mature individual : the two basal cells unusually elongate, tin* branch from the stalk of 
the perithecium somewLat abnormal. A 12. 
Fig. 7. Mature individual, normal form, A 12. 
Fig. 8. Mature individual developing a second perithecium at the right. A 12. 
Fig. 9. Young individual, showing young perithecium and its very highly developed spirally 
twisted tricliogyne. A 12. 
Fig. 10. A young perithecium with much less highly developed trichogyne. D 12. 
Fig, IL Perithecium enlarged, showing prominences. D 4. 
Fig. 12. Perithecium seen in optical section with contained ascus mass before any spore discharge 
has occurred. D 4. 
Fig. 13. Peculiar modification of basal cell of receptacle. D 4. 
Fig. IL Portion of appendage with lateral antlieridia. D 12. 
Fig. 15. Two spores. D 4. 
Moschomyces msigfus Thaxter. 
Fig. 16. Mature individual with four perithecia, two of which are shown in optical section with 
their spore masses, that at the left showing lateral view of ascogenic cell at its base, the other showing 
the round tips of the numerous asci. The cellular liaustorium is shown projecting through afrag^^^**rit 
of the soft chitinous integument of the host torn off w^hen the fungus was removed. A 12. 
Fig. 17. An ascus with eight ascospores ; its stalk partly broken off. Leitz oil ^^ 4. 
Fig, 18. One of the masses of coherent spores discharged from the perithecium. D 4. 
Fig. 19. See above sub Sphaleromyces LathrohlL 
Cliijefomyces Pinophili Thaxter. 
Figs. 20, 21. Two mature individuals. A 12. 
Fig. 22. Spore. D 4. 
Rhachomyces speluncalis Thaxter. 
Fig. 23. Mature individual, the receptacle apparently proliferous. A 12. 
Fig. 24. Mature individual typical form. A 12. 
Fig. 25. Antheridium. D 4. 
Moschomyces insignis Thaxter. 
Fig. 26. Portion of fertile appendage with branchiet terminated by an antherirlium. J 4. 
