DESCRIPTION OF THE PLATES. 



The figures have been reproduced by photo-lithography and somewhat, reduced from original ink drawings, 

 the approximate magnifications of which are indicated. 



PLATE XXVIII. 



Dimcromyces coarctatus Thaxter. Fig. 1. Mature female individual with two perithecia, side view, X 600. 

 Fig. 2. Mature female individual with one perithecium, the male individual at. right, a spore in process of discharge 

 from the apex of the perithecium, X 600. Fig. 3. The same, anterior view, X 600. Fig. 4. Young female indi- 

 vidual, lateral view showing young perithecia at left with terminal trichogyne, X 950. Fig. 5. Mature male indi- 

 vidual with three antheridia, lateral view, X 1800. Fig. 17. Young perithecium with terminal trichogyne on 

 which are two antherozoids, X 1800. 



Dimcromyces rhizophorus Thaxter. Fig. 6. Mature female individual; posterior view showing furcate rhizoid, 

 X 600. Fig. 7. Similar individual partly lateral view showing position in situ on small portion of the host integu- 

 ment beneath which the furcate rhizoid extends into its body cavity, X 600. Fig. 8. Male individual with three 

 antheridia showing its relation to integument of host, the simple rhizoid lying wholly within the body cavity, X 1150. 



Dimcromyces Forficula Thaxter. Fig. 9. Mature female individual with a male at right showing relative 

 position on the integument of host, X 600. Fig. 10. Mature female individual; lateral view, X 600. Fig. 11. 

 Mature male showing relation to basal cell of female at right, X 1150. 



Dimorphomyces Thleopora Thaxter. Fig. 12. Female individual with male at right . Fig. 13. Distal portions 

 of female (left) and male receptacles. 



Dimorphomyces Myrmedonice Thaxter. Fig. 14. Female individual with five perithecia seen from above (in 

 relation to position of growth on host), X 600. Fig. 15. Similar individual seen from below, X 600. Fig. 16. 

 Male individual, X 950. 



PLATE XXIX. 



Dimeromyces Labia Thaxter. Figs. 1-3. Three female individuals seen from different positions, X 600. Fig. 4. 

 Female individual more highly magnified, X 1150. Fig. 5. Male individual with three antheridia, X 1150. 



Dimeromyces minutissimus Thaxter. Fig. 6. Mature female individual more highly magnified, X 1150. Figs. 

 7-8. Mature female individuals, X 600. Fig. 9. Mature male individual, X 1800. 



Dimeromyces nanomasculus Thaxter. Fig. 10. Mature female individual, X 600. Figs. 11-12. Female indi- 

 vidual with a male individual (fig. 12) in situ at its base, X 600. Fig. 13. Mature male individual X 1800. 



Dimeromyces crispatus Thaxter. Fig. 14. Mature female individual with male in situ on the right at its base, 

 X 600. Fig. 15. Male individual with the base of female seen at left, X 1150. 



Dimeromyces pinnatus Thaxter. Fig. 16. Well developed female individual with three perithecia, X 600. 

 Fig. 17. Female individual from leg of host, X 600. Fig. 18. Male individual with three antheridia, X 600. 



PLATE XXX. 



Dichomyces Cafianus Thaxter. Figs. 1-2. Posterior and anterior views of mature individuals, X 600. 



Dichomyces Peruvianus Thaxter. Figs. 3-4. Anterior and posterior views of mature individuals, X 600. 

 Fig. 5. Tip of perithecium enlarged, X 1800. 



Dichomyces Angolensis Thaxter. Figs. 6-7. Posterior and anterior views of mature individuals, X 600. 



Peyritschiclla protect,. Thaxter. Fig. 8. Small individual on Bledius bicornis (England) X 600. Fig. 9. 

 Well developed individual on the same host. 



Peyritschiclla Amazonica Thaxter. Fig. 10. Posterior view of mature individual from Nanta, Amazon, X 600. 



Peyritschiella Xanthopygi Thaxter. Fig. 11. Anterior view of mature individual, X 600. 



PLATE XXXI. 



Dichomyces exilis Thaxter. Figs. 1-2. Two individuals showing variation in form of perithecia, anterior and 

 posterior views respectively, X 600. 



