Diam. 

 x 400 



Page 



974 



x 300 



975 



x 400 



978 



PLATE 82. 



Coronida et Tympanida. 



Fig. 1. Coronidium cervicorne, n. sp., 

 Seen from the apical pole. 



Fig. 2. Coronidium acacia, n. sp., .... 



Fig. 3. Eucoronis angulata, n. sp., . 



Half from the apical, half from the dorsal side. 



Fig. 4. Eucoronis challengeri, n. sp. , . . . . x 400 978 



The red central capsule encloses a large ovate nucleus and is surrounded 

 by numerous xanthellse. 



Fig. 5. Eucoronis nephrospyris, n. sp., 



Fig. 6. Eucoronis per spirillum, n. sp., 



Fig. 7. Coronidium dyostephanus, n. sp., . 

 Seen from the apical pole. 



Fig. 8. Coronidium diadema, n. sp., 



Fig. 9. Acrocubus octopylus, n. sp., 



Fig. 10. Parastephanus asymmetricus, n. sp., 



Fig. 11. Eutympanium militarc, n. sp., 



Oblique view. 



Fig. 12. Lithocubus astragalus, n. sp., 



Fig. 13. Trissocircus globus, r. sp., .... 



X 



300 



977 



X 



300 



977 



X 



400 



974 



x 



300 



974 



X 



300 



993 



x 



400 



1008 



x 



400 



1014 



x 



400 



1012 



X 



400 



986 



