286 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



The colored illustrations have been mostly prepared after fresh material, a 

 few after alcoholic preparations. The microscopic drawings have been made 

 from glycerine preparations with the aid of a Zeiss Apochromat, Obj. 2 mm., 

 Aperture 1.40, Compensating Oculars 8 and 12. Projection on working table. 



EXPLANATION OF PLATE XLIL 



Fig. I. Hysteranghim Phillipsii, sp. nov. 



(a) Vertical section with fibrillose rootlets, (b) Section of gleba. 



Fig. 2. Hysterangium cinereum, sp. nov. 



(a) Fully developed fungus, (b) Transverse section. 



Fig. 3. Octaviania monticola, sp. nov. 



(a) External view, (b) Transverse section of same, (c) Sec- 

 tion of gleba enlarged. 



Fig. 4. Octaviania occidentalism sp. nov. 



(a) Section of gleba enlarged; Zeiss AA, Oc. 2. (b) Section 

 showing hymenium and pseudobasidia; Zeiss AA, Oc. 6. 



(c) Pseudobasidia enlarged, showing spores round or ovoid. 



(d) Free spore. 



Fig. 5. Octaviania socialis, sp. nov. 



(a) Perfect plant, (b) Vertical section, (c) Enlarged spores 

 in situ, (d) Basidia, sterigma, and spores. 



Fig. 6. Hymenogaster utriculatus, sp. nov. 



(a) Entire plant, (b) Section of gleba showing cells and hyme- 

 nium. (c) Enlarged section of hymenium. (d, e) Two spores 

 with utricle, (f ) Isolated spore. 



Fig. 7. Leucophleps magnata, gen. et sp. nov. 



(a) Section of hymenium with basidia and spores, (b) Vertical 

 section showing cell-structure, (c) Optical section of spore with 

 spore investment. 



