PLATE XLVII. 



i ee magnified -"< diainetert 



Pass. 

 5.1,2. Staurastrtjm tricorni ruM, front and end view, . . 145 



3,4. Staurastruw Sovm < i~\im k. front and end view, 146,161 



5,6. Stauraotrum spongiosum, front and end view, . . . 148 



7. 8. " " other form, front and end view, I 18 



9, 10. Stauraotrum ^.rctiscon, M. munitum, W I, . 148 



