TH A XT Ell. MONOGRAPH OK THE LA BOULBENJ ACE7E. 



PLATE L. 



Sphaleromyces Latonw Thaxtcr. Figs. 1-2. Mature individuals, x 290. Fig. 3. Immature individuals, 

 X 290. 



Caret hromyees purpurascens Thaxlor. Figs. 4 5. Two mature individuals, X 290. 



Corelhromyc.es Slilici Thaxtcr. Figs. 6 8. Mature Individuals, X 290. Fig. 9. Voting individual showing 

 seriate arrangement of antheridia, X 000. 



CorcXhromyc.es longicaulis Thaxter. Figs. 10-11. Two mature individuals, X 290. 



Tcralomyc.es insignis Thaxlor. Fig. 12. Typical form of mature individual. X 290. Fig. 13. Variety with 

 colorless receptacle, X 290. 



Sympleclromyc.es vulgaris Thaxter. Figs. 14-15. Mature individuals with one and four perithecia respect ively , 

 X 290. Fig. 16. Young individual showing antheridia and sterile appendages, X 600. 



PLATE LI. 



Corethromyccs Brazilianus Thaxter. Fig. 1. Large form from Columbia, X 290. Fig. 2. Typical form from 

 Brazil, X 290. 



Corethromyccs Cryptobii Thaxter. Fig. 3. Well developed individual from Kansas, X 290. 



E ucorcthromyccs Apotomi Thaxter. Figs. 4-5. Mature individual from Europe. The appendages more or 

 less broken, X 290. Fig. 6. Appendage of younger individual from Celebes, showing solitary and clustered an- 

 theridia, X 600. 



Stichomyccs Conosomce Thaxter. Figs. 7-9. Mature individuals variously developed, X 290. Fig. 10. Young 

 individual showing production of antheridia from primary axis, X 625. 



Stichomyces StUici Thaxter. Figs. 11-12. Mature individuals, X 290. Fig. 13. Portion of axis showing 

 antheridia, X 1100. Fig. 14. Pair of spores, X 1100. 



Ectcinomyces Trichopterophilus Thaxter. Figs. 15-16. Two normal somewhat elongated individuals, X 300. 

 Fig. 17. Small stout individual in which the receptacle has failed to elongate, X 300. Fig. 18. Young individual 

 showing triehogynes and antheridia, X 300. 



PLATE LII. 



Splw.lerom.yccs Chiriquensis Thaxter. Figs. 1-2. Mature individuals, the appendages somewhat broken, X 290. 

 Sphaleromyces Brachyderi Thaxter. Figs 3-5. Two mature individuals, X 290. 



Sphaleromyces alropurpureus Thaxter. Figs. 6-7. Mature individuals; the appendages badly broken, X 290. 

 Sphaleromyces Quedionuchi Thaxter. Figs. 8-9. Two mature individuals, X 290. Fig. 10. Detail of tip of 

 perithecium, X 625. 



Sphaleromyces obtusus Thaxter. Figs. 11-13. Mature individuals, X 290. 



Sphaleromyces propinquus Thaxter. Figs. 14-15. Two mature individuals, X 290. Fig. 16. Detail of tip of 

 perithecium, X 1100. 



Sphaleromyces Indicus Thaxter. Figs. 17-18. Two mature individuals the appendages somewhat broken, X 



290. 



Rhizomyces crispatus Thaxter. Fig. 19. Mature individual of Type form, X 290. Fig. 20. A variety with 

 differently shaped perithecium, X 290. Fig. 21. Detail of ant he ridial branchlet, X 625. 



Rhizomyces gibbosus Thaxter. Figs. 22-23. Two mature individuals. Fig. 22 showing relation of basal cell 

 to integument of host. The rhizoidal apparatus broken off in both specimens, X 290. 



PLATE LIII. 



Laboulbenia cxigua Thaxter. Fig. 1. Mature type, X 260. 



Laboulbenia prolifcrans var. atrata Thaxter. Fig. 2. Large form occurring on Euchlamius trochanteric us Kolbe, 

 X 150. 



Laboulbenia prolifcrans var. intcrposita Thaxter. Fig. 3. Individual on Chlwnius from Angola, Africa, show- 

 ing partly blackened bases of appendages, X 150. Fig. 4. Individual on Chlwnius from Delagoa Bay, X 150. 



Laboulbenia. prolifcrans var. cincta Thaxter. Fig. 5. Type form on Craspidophorus adaquatus Kolbe. Africa, 

 X 150. 



Laboulbenia proliferans var. divaricata Thaxter. Fig. 6. Type on Chlwnius from Sandakan, N. Borneo, X 150. 

 Fig. 7. Individual on Rhembus Icevis Lesne from Java, X 150. 



Laboulbenia Craspedophori Thaxter. Fig. 8. Individual on Panagmus Symei from Old Calabar Africa, X 150. 

 Fig. 9. Detail of antheridial branch with insertion cell, X 625. 



