PLATE 25. 



CUBOSPH^RIDA. 



Diam. Page 

 Fig. 1. Hexadoridium streptacanthum, n. sp., . . . . x 400 206 



Fig. la. The two concentric medullary shells. 



Fig. 2. Hexalonche amphisiphon, n. sp., . . . . x 300 182 



Fig. 2a. Medullary shell connected with a fragment of the cortical shelL 

 Fig. 2b. Vertical section through the wall of the cortical shell. (Below 

 the centre of the Plate, also lettered 3a by mistake.) 



Fig. 3. Hexalonche rosetta, n. sp., . . . . x 400 180 



Fig. 3a. Medullary shell. 



Fig. 3&. Vertical section through the wall of the cortical shell. 



Fig. 4. Hexalonche curvicornis, n. sp., . . . . x 300 181 



Outer shell not yet complete, or partly broken off (?). 



Fig. 5. Hexalonche anaximenis, n. sp., 



Fig. 6. Hexalonche hystricina, n. sp., . 



Fig. 7. Hexacontium circumtextum, n. sp., 



Fig 7a. Vertical section through the double wall of the cortical shell. 



Fig. 8. Hexacontium gladiatum, n. sp., . . . . x 400 198 



A part of the two outer shells and of the radial spines is broken off. 



400 



183 



300 



187 



400 



193 



