PLATE 58. 



TKIPOCYRTIDA, SETHOCYRTIDA, PHORMOCYKTIDA et THEOCYRTIDA. 



Diam. 



Fig. 1. Cecryphalium sestrodiscus, n. sp., . . x 400 1399 



Apical view. 



Fig. 2. Cecryphalium lamprodiscus, n. sp., . . . ., x 400 1398 



Apical view. 



Fig. 3. Clathrocyclas coscinodiscus, n. sp., . . . . x 400 1389 



Apical view. 



Fig. 4. Clathrocyclas coscinodiscus, n. sp., . . . x 700 1389 



The cephalis alone, with the two horns. 



Fig. 5. Clathrocyclas semeles, n. sp., . . . . .x400 1388 



Lateral view. 



Fig. 6. Sethoconus capreolus, n. sp., . . . '. . x 400 1291 



Lateral view. 



Fig. 7. Lampromitra quadricuspis, n. sp., . . . x 400 1214 



Apical view. 



Fig. 8. Lampromitra furcata, n. sp., . . . .x400 1215 



The collar septum after removal oi the cephalis. 



Fig. 9. Lampromitra dendrocorona, n. sp., . . . x 400 1216 



Apical view. 



