PLATE XXXII. 



Figures magniJted oOO diameters. 



Page. 



Figs. 1, 2. EuASTBCM ciRCUL.iKE, front and transverse views of semi-cell, 112 



Fig. 3. EuASTRTjM GE:>ntATnM, . . . . 112 



" 4. " " transverse view of semi-cell, 112 



'■ .5. EUASTKUM EVEBBTTENSE, . . . 112 



Figs, fi, 7. " " transverse and lateral aspect of 



semi-cell, . . 112 



" 8-10. EuAsr^E^^t AMPULLACEnJi, three forms, . . 110 



Fig. 11. " " tran.'iverse view of semi-cell, . 110 



" 12. EOASTRUJI HCMEROSUM, . . . 107 



" l.S. " " basal view of semi-cell, . . 107 



Figs. 14, 15. Etjastkum pinnatom, . 107 



Fig. 16. '■ " basal aspect of semi-cell, . . 107 



