Speare : Entomogenous Fungi 



75 



they are cut off in mucus glomerules. Sclerotia 125-200 microns 

 in diameter, roughly spherical, at first white, later brown in color. 

 Elements of sclerotia very irregular in form but roughly spher- 

 ical, measuring 10-15 microns in diam. provided with very thick 

 (4-6 microns) walls. 



Hosts: Mezira emarginata Say, Louisiana, U. S. A. 

 Mezira lobata Say. 



Bureau of Entomology, 



United States Department of Agriculture, 

 Washington, D. C. 



Explanation of Plates 

 Plate 3 



Figs. 1-5. Hirsutella saussurei. (1) Portion of end of a synnema. X 532. 

 (2) Middle portion of synnema showing method of branching. X 92. (3) 

 Sporophore with attached spore. X 1048. (4) Sporophore. X 1048. (5) 

 Spores. 



Figs. 6-9. Hirsutella fusiformis. (6) Portion of a synnema. X 568. 

 (7-8) Spores. X 1048. (9) Sporophore. 



Figs. 10—11. Hirsutella floccosa. (10) Spores. (11) Sporophores. X 1048. 



Figs. 12-13. Hirsutella entomophila. (12) Sporophore. (13) Spores. 

 X 1048. 



Figs. 14-15. Hirsutella citriformis. (14) Sporophores and spores from 

 Ricania. (15) Abnormal development from Siphanta acuta. X 1048. 



Fig. 16. Spores of H. saussurei, H . citriformis, and H . fusiformis imbedded 

 in a mucus-like substance. X 568. 



Plate 4 



Synnematium Jonesii 



Fig. 1. Terminal portion of a synnema showing (a) isolated lateral 

 sporophores, (&) massed terminal sporophores, (c) mucus glomerules of spores. 

 X 92. 



Fig. 2. Terminal portion of a synnema showing a secondary growth aris- 

 ing from beneath the spore mass of the primary growth. X 92. 



Fig. 3. Fruiting stalk showing sclerotia in situ. X 50. 



Fig. 4. Portion of a synnema with sporophore in situ. X 1048. 



Fig. 5. Sclerotium germinating on agar plate culture. X 65. 



Fig. 6. Sclerotia. X 92. Fig. 7, cells of sclerotia. X 568. Fig. 8, the 

 same germinating. X 568. Fig. 9, cell of sclerotium. X 1048. 



Figs. 10-11. Spore glomerules. X 1048 and X 568. 



Fig. 12. Spores. X 1048. 



Fig. 13. Spore germinating. X 1048. 



Fig. 14. Cells of sclerotium germinating. X 400. 



Fig. 15. Single cell of sclerotium germinating. X 1048. 



