-3- 



Ort^oneis - 358 



Ostrunin - 264 



Peronla - 306,382 



Plnnularla 259,260,294,310-313,385-392,406 



Pseudo-Eunotia - 270 



Rhaohoneis - 269,294 



Rhlzosolenla - 314 - 321,384 



Rhopalodia - 252 - 256; 265, 294 



Scoliooleura - 261, 262 



Scoliotronis - 261 



Skeletonema - 321 



Stauroneis - 241 242,299 



StenoT)terOblB - 284 



Steohenodiscus - 266 



Strer>totheca - 383 



Surlrell? - 245,246,266.280,232,283,295,299, 

 309,353-368 



Synedra - 300 - 306 



Tnbellaria - 269 



Tetracyclin - 269,273.230 - 292,294,297 



Triceratium - 371,372 



