PLATE CXXXIV. 
PAGE 
Fig. 1. AcTiKOCYCLUS ELLiPTicus Grunow. X 3331/3 502 
Fig. 2. AcTixocYLUS MONiLii-oRMis Ralts. X 333% 502 
Fig. 3. ACTINOPTYCHUS HELIOPELTA Gfunow. X 166% i^9 
Fig. 4. AcTiNOPTYCHUS UNDULATUS (Kiitzing). X 333% 499 
Fig. 5. ArLAcoDiscus rogehsii (Bailey), x 166% 497 
Fig. 6. BiDDULPHiA ACUTA (Ehrenberg). X SSSVs 492 
Fig. 7. BiDDULPHiA cOiNDEcoRA (Ehrenberg) . X 333% 492 
Fig. 8. BiDDULniiA decipiens Grunow. X 333% 493 
Fig. 9. BinDULPHiA inteepunctata (Grunow). X 333% 494 
Fig. 10. BIDDULPHIA sEMitiRCULAius (Briglitwoll) . X 333% 494 
Fig. 11. BIDDULPHIA SUBORBICULAEIS GrUHOW. X 333% 495 
Fig. 12. BIDDULPHIA TESSELLATA (Greville) . X 3331/3 495 
Fig. 13. CosciNODiscus apiculatus Elirenberg. X 333% 
Fig. 15. CoscixoDisci'S heteroporus Ehrenberg. X 333% . 
Fig. 16. CoscixoDiscus lewisianus Greville. x 333%.... 
503 
Fig. 14. CosciNODiscus asteeoides Truan and Witt. X 333% 504 
505 
505 
128 
