KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 34. N:0 I. 



Plate YIII. 



Fit;. 1, 2. Hyalophysa di'UcaUda Cl X 500. 



3. Dinophysis Vanhoffenii OSTENF X 500. 



4. Steiniella{?) punctata Cl X 500. 



> 5. Pe7'idiinu)n exiguwn Cl X 500. 



6. Asteromphaltis heptuctis Ralfs X 1000. 



1. A. atlanticus Cl. from Portugal X 1000. 



8, 9. A. atlanticus Cl. from N. Atlantic X 1000. 



10, 11. Phalacroma minutuni CL X 500. 



i 12. T/ialassiosira condensata CL.; a chain X 500. 



13. Th. condensata Cl. ; a valve, ignited X 1000. 



14. Ceratiuni{?) hyperboreuin Cl X 500. 



5. 15. Pterosjihwru Mobii J0RUENSEN X 500. 



16. Cha'toceros dificilis Cl., sterile chain X 1000. 



17. The same, with endocysts X 1000. 



18. The same, eudocysts, from above and from the side X 1000. 



19. Chceloceros Ostenfeldii Cl X 1000. 



