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



EXPLANATION OF PLATE XLV. 



Fig. 24. Terfezia spinosa, sp. nov. 



(a) Isolated spore, (b) Spine on surface of spore. 



Fig. 25. Terfezia leonis Tul. 

 Isolated spore. 



Fig. 26. Terfezia Zeynebice, sp. nov. 

 Isolated spore. 



Fig. 27. Delastria rosea Tul. 



(a) Section of gleba with ascus and spores, (b) Isolated spore. 



Fig. 28. Myrmecocystis cevebriformis, gen. et sp. nov. 



(a) Fully developed fungus, (b) Vertical section, (c) Detail 

 of surface of fungus, (d) Ascus with spores, (e) Detail of 

 surface of spore. 



Fig. 29. Myrmecocystis Candida, sp. nov. 



(a) Section of gleba. (b) Asci with spores, (c) Isolated 

 spore showing a rough surface, (d) Optical section of spore, 

 (e) Detail of sculptured surface of spore. Asci in c and d im- 

 properly outlined, should appear as in b. 



Fig. 30. Tuber (Eutuber) cHriniiui, sp. nov. 



(a) Section of gleba with ascus and spores, (b, c) Isolated 

 spores. 



Fig. 31. Tuber ( Sphcerotuber ) Calif ornicum, sp. nov. 



(a) Section of gleba with asci and spores, (b) Isolated spore. 



Fig. 32. Tuber (Sphcerogasterj candidum, sp. nov. 



(a) Ascus with spores, (b) Isolated spore. 



Fig- 33- Pachyphloeus carneus, sp. nov. 



(a) Ascus with irregularly serrate spores, (b) Isolated spore. 



Fig 34. Geopora niagnaia, sp. nov. 



(a) Fully developed fungus, (b) Section of fungus, (c) En- 

 larged section of gleba, (d) Enlarged section of hymenium. 



