PLATE LXXX. 



Fid. 



1, 1 0. VALKERIA TREMULA, p. 554. 



2. - , polypide expanded, and cells showing 



the setose operculum. 



3. TRITICELLA PEDICELLATA, p. 547. 



4. - , zocecium, showing the ventral side 



and the aperture. 



5. , zocecium, with polypide expanded. 



After Alder. 



6. TRITICELLA KORENII, p. 545. After G. O. Sars. 



See Plate XLV. figs. 8-10. 



7. TRITICELLA FLAVA, p. 543. After Dalyell. 



8. CYLINDRCECIUM PUSILLUM, p. 537*. 



9. ?CYLINDR<ECIUM PUSILLUM, dwarf var., p. 538; 



or possibly a distinct species. 



* This figure is defective in not showing the expansion at the base of the 

 zooecia. See woodcut, p. 538. 



