PLATE XLI. 



Figures magnitied 375 diameters. 



Page. 

 Figs. 1, 2. MiCKASTEKIAS KlTCHELII, two forms, . . 129 



Fig. 3. " " lateral view, . ,120 



Figs. 4, 5. MicKASTEBiAS LATiCEPs, — M. clisputa, Wood, . 128 



Fig. 6. MiCEASTEBIAS Baileyi, . . 130 



Figs. 7, 8. MiCBASTERIAS PINNATIFIDA, two forms, . . . 129 



Fig 9. " " Var. inflata, ... 129 



" 10. MiOKASTERIAS Mahabui-eshwabensis, 124 



" 11. MiCRASTEEIAS PSEUDOFDRCATA, Var. minor, . 122 



" 12. MiCRASTEBIAS BXPANSA, . . , . 129 



