PL ATK XLIV. 



Figures magnified 500 diameters. 



Page. 



Figs. 1, 2. Staurastrum Ophiura, Var. tetraoerum, . . . 133 

 Fig. 3. Var. pentacerum, lighter form than 



Plate X I.I 1 1, fig. 13, . . 133 



" 4. Staubastrum leftocladum, .... 136 



" 5. " Var. divergens, . . . 13(> 



PigB. 6, 7. 8taura8TRUM Beleneanum, front and end view, . L33 



Figs. 8, 9, 10. Staurastrum nanom, three aspects, ... 138 



11,12. Staurastrum coronulatum, .... 135 



13,14. Staurastrum kotuIjA, end and front view, . . . 135 



15,16, Staurastrum pentacladdm, end and front view, Compare 



Plate X I.I 1 1, fig. 15, . . L36 



" 17,1^. Staurastrum orallatoridm, Var. ungulatum, . . 136 



Fig. 19. " typical form, . . . 136 



58.20,21. Staurastrum fusiforme, front and end view, . . l.'->7 



