PLATE 21. 



C'UBOSPH^KIDA. 



Diam. Pago 



Fig. 1. Hexastylus cochleatu*, n. sp., . . . . . x 400 174 



From the central capsule, enclosed in the shell, numerous delicate radial 

 pseudopodia arise, which are protruded through the pores of the shell. 



Fig. 2. Hexastylus triaxonius, n. sp., . . . x 400 175 



Fig. 3. Hexastylus phcenaxonim, n. sp., . . . . x 300 171 



Fig. 4. Hexastylus thaletis, n. sp., .' .' . . . x 400 172 



Fig. 5. Hexastylus minimus, n. sp., . . . . . x 400 172 



Fig. 6. Hexastylus dimensivus, n. sp., . . . . x 400 175 



Fig. 7. Hexastylus spiral-is, n. sp., . . . . x 400 177 



Fig. 8. Hexastylus dictyotus, n. sp., . . . . x 400 176 



Fig. 9. Hexastylus dictyotiis, n. sp., . . . . x 400 176 



Central capsule with concentric nucleus and nucleolus ; the protoplasm is 

 radially striped. 



Fig. 10. Hexastylus marginatus, n. sp., . . . . x 400 176 

 Fig. lOrt. Radial section through the shell-wall. 



Fig. 11. Hexastylus solo n is, n. sp., . . . . . x 400 173 



Fig. 12. Hexastylus contortus, n. sp., . . . . x 300 177 



