TRANSACTIONS OF MICROSCOPICAL SOCIETY. 



DESCRIPTION OF PLATE X, 

 Illustrating Dr. Greville's paper on New Diatoms^ Series IV. 



i<ig. 



1 . — Stidodincus Cali/oriiicus. 

 2, 3. — S. Kittonianus, x GOO. 

 4. — Coscinodiscus pateUceforiu is. 

 5. — Tiiceratmm marginatam. 

 C. — T. imlclierrimam. 

 7 — U. — 2'. AbeixromOleaiiHiii. 

 10. — T. inoplnaticiu. 

 11. — T. approximatum . 

 12, 13. — T. fjraliomm . 

 14. — T. vanegatum. 

 lo. — T. nebulositm. 

 10. — Amphiprora conspicua. 



All the ligures except 2 and 3 ;irc X 400. 



Errata in Series 111. — I'or Triceratiuni nolahUh and T. insignis, read 



T. notubile and T, insigne. 



