PLATE 55. 



Pelenocalpida, Anthocyrtida et Sethocyrtida. 



Fig. 1. Sethoconus facetus, n. sp. (vel Phlebarachnium- facetum), 



Upper part of the shell. 



Fig. 2. Sethoconus venostis, n. sp. (vel Phlebarachnium venosum), . 



Shell including the four-lobed central capsule. 



Fig. 3. Sethophormis aurelia, n. sp. (vel Leptarachnium aurelia), . 



Shell seen from above. 



Fig. 4. Sethophormis aurelia, n. sp.. 



Cephalis more enlarged, with the enclosed four-lobed central capsule. 



Fig. 5. Cladarachnium ramosum, n. sp., 

 Apical view. 



Fig. 6. Cladarachnium ramosum, n. sp., 

 Lateral view. 



Fig. 7. Bathropyramis interrupta, n. sp., . 

 Apical part of the shell, from above. 



Fig. 8. Litharachnium araneosum, n. sp., . 

 Apical part of the shell, from above. 



Fig. 9. Litharachnium epeira, n. sp., 

 Oblique view of the shell. 



Fig. 10. Litharachnium araneosum, n. sp.; . 

 Lateral view. 



Fig. 11. Periarachnium periplectum, n. sp., . 

 Shell enclosing the trilobed central capsule. 



Diam. 

 x 300 



Page 

 1296 



x 250 1297 



x 100 1248 



x 400 1248 



x 300 1165 



x 70 1165 



x 300 1160 



x 300 1163 



x 500 1164 



x 50 1163 



x 500 1297 



