PLATE 53. 



Zygospyrida, Tripocalpida, Ph^enocalpida et Cyrtocalpida. 



Fig. 



1. 



Archicapsa triforis, n. sp., . 

 Lateral view. 



Fig. 



2. 



Archicapsa triforis, n. sp., . 

 Basal view. 



Fig. 



3. 



Halicapsa triglochin, n. sp., 

 Lateral view. 



Fig. 



4. 



Halicapsa triglochin , n. sp., 

 Basal view. 



Fig. 



5. 



Halicapsa hystrix, n. sp., 

 Lateral view. 



Fig. 



6. 



Halicapsa hystrix, n. sp., 



Basal view. 

 Fig. 7. Gantharospyris platybursa, n. sp. (vel Platybursa compressa), 

 Tessarospyris clathrobursa, n. sp. (vel Glathrobursa dictyopus), 

 Peridium spinipes, n. sp., ..... 

 Peridium palmipes, n. sp., ..... 



Fig. 8 



Fig 9. 

 Fig. 10. 

 Fig 11. 



Archiscenium quadrispinimi, n. sp., 



In the spherical central capsule the dark nucleus is visible. 



Fig. 12. Euscenium eucolpium, n. sp., 

 Fig. 13. Cladoscenium ancoratum, n. sp., 

 Fig. 14. Pteroscenmm pinnatum, n. sp., 



Lateral view. 



Fig. 15. Pterosccnium pinnattcm, n. sp., 



Vertical section. 



Fig. 16. Pterosccnium pinnatum, n. sp., 

 Basal view. 



Fig. 17. Calpophwna hexarrhabda, n. sp., 



Fig. 18. Calpophmna hexarrhabda, n. sp., 

 Basal plate. 



Fig. 19. Tetraspyris tetracorethra, n. sp., 



With the four-lobed central capsule, in each lobe an oil-globule. 



Fig. 20. Tetraspyris tetracorethra, n. sp., 

 Shell more enlarged. 



Diam. 



Page 



. X 300 



1191 



. X 300 



1191 



. X 200 



1190 



. X 200 



1191 



. x 200 



1191 



. x 200 



1191 



. x 400 



1051 



. x 400 



1045 



. x 500 



1154 



. x 500 



1154 



. x 500 



1150 



. x 500 



1147 



. x 400 



1149 



. x 400 



1152 



. x 400 



1152 



. x 400 



1152 



. x 400 



1176 



. x 400 



1176 



. x 400 



1044 



. x 800 



1044 



