6o Transactions British Mycological Society. 



of temperature, or of acidity or alkalinity of medium pro- 

 duced no corresponding change of cokjur. 



The fungus bears some resemblance to Aspergillus nigri- 

 cans described by Cooke, 1885, as occurring " in the meatus 

 auditorius of the human ear," but the conidia are smaller 

 and the colour does not approach black ; moreover it is a 

 Sterigmatocystis not an Aspergillus. 



In conclusion, I wish to express my indebtedness to Mr. 

 W. B. Grove, M.A., for helpful criticism and for the Latin 

 diagnoses, and to Professor West for the loan of books of 

 reference, and also to Miss Lorrain Smith for her kindness 

 in consulting books of reference inaccessible to me. 



Fig. DESCRIPTION OF PLATE. 



1. ^"Egcrita viridis. Groups of sporodochia showing 



the crowded habit, x 10 



2. Conidiophore and dense mass of conidia, x 80. 



3. Conidia forming branching chains, x 600. 



4. Conidia, from a young sporodochium x 600. 



5. Clonnstachys dichotoma. Small portion of a much 



branched conidiophore, x 80. 



6. Branch of a conidiophore with conidia arranged in the 



form of a spike, x 600. 



7. Sterile hvphie, x 600. 



8. Dendrodochium album. Group of pycnidia, each 



pycnidium surmounted by a mass of pycnospores, x 



9. Pycnidium seen to be erumpent x 600. 



10. Pycnospores, x 600. 



11. Trifurcate conidiophores, x 600. 



12. Trichocrea oodes. A group of pvcnidia, x 40. 



a. Young pycnidia. 



b. Mature pycnidium with mass of pycnospores 



just appearing through the ostiole. 



c. Immature pycnidium whose pycnospores have 



been pressed out. 



13. Branched conidiophores, x 600. 



14. A mass of branched conidiophores. 



15. Pycnospores which are very long and attenuated. 



16. Germinating pycnospores which are connected by 



anastomosing hyphce, x 600. 



17. Haplographium fuscipes. Group of conidiophores x 



18. Conidiophores showing branching chains of conidia, x 



600. 



