PLATE LVli. 



Figures magnified 500 diameters. 



PAGfi. 

 Figs. 1-6. Stadbastbum SESALDr, six a,spects and forms, . . 151 



Fip;. 7. " " Var. spinosum, . . 1 52 



Figs. 8, 9. Staueastbum Pseudosebaldi, . . 152 



Fig. 1 0. Staoeastbum Sebaldi, small variety, . . 151 



" 11. Staubastrum eiongatum, front view, . 143 



•' 12. " " end view, . 143 



Figs. 13, 14. Staubastrum aeouatum, front and end vivws. . .152 



" 15, 16. Staurastbum subaecuatum, front and eml views, . 153 



" 17, 18, 19. Staubastetim Meriani, . . . . 146 



" 20, 21. STA.UEASTEUM GBALLATOEIUM, a form, 150 



Fig. "2 Staubastrum Feanconicum, front view, 145 



