JOURNAL OF MICROSCOPICAL SCIENCE. 



DESCRIPTION OF PLATE X, 



Illustrating Dr. GreAalle^s paper on New Diatoms. 

 Series VII. 



Fig. 



1, 2. — Synedra Normaniana. 



3. — „ „ dwarf variety. 



4. — Triceratium Davyanum. 

 5, 6. — Cocconeis ccelata, X 600. 



7. — Glyphodesmis eximia, front view. 



8. — „ „ small frustule. 



9. — „ „ lateral view of valve, showing moniliform 



striae. 



10. — „ „ the same, focused to show the clathrate 



structure. 



11. — Mastogloia capitata, lateral view. 



12. „ „ front view. 



All the figures except 5 and 6 are X 400. 



