PLATE 140. 



N.B. The signification of the characters is the same in all the figures (compare p. 718). 



a. Northern polar spines. 



b. Northern tropical spines. 



c. Equatorial spines. 



d. Southern tropical spines. 

 '-. Southern polar spines. 



BELONASPIDA, HEXALASPIDA et DIPLOCONIDA. 



Diam. Page 



Fig. 1. Diploconus amcdla, n. sp., . . . . x 300 885 



Fig. 2. Diploconus hexaphyllus, n. sp. , . . . . x 300 886 



Fig. 3. Diploconus cyathiscus, n. sp., . . . . x 300 885 



Fig. 4. Diploconus cotyliscus, n. sp., . . . . x 400 886 

 Polar view. 



Fig. 5. Diplocolpus serratus, n. sp., . . . . . x 300 888 



Fig. 6. Diplocolpus cristatus, n. sp., . . . . . x 400 887 



Fig. 7. Diplocolpus costatus, n. sp., ... . x 400 887 



Fig. 8. Diplocolpus sulcatus, n. sp., . . . . . x 300 888 



Fig. 9. Diplocolpus dentatus, n. sp., . . . . . x 300 888 



Meridional section through the centre of the shell 



Fig. 10. Hexacolpus infundibulum, n. sp., , . . x 300 881 



Fig. 11. Hexacolpus trypanon, n. sp., ... x 300 881 



Fig. 12. Hexaconus echinatus, n. sp., . . . . . x 300 878 



Fig. 13. Coleaspis vaginata, n. sp., . . x 300 866 

 Meridional section through the shell. 



Fig. 14. Coleaspis hydrotomica, n. sp., . . x 400 867 



Fig. 15. Hexonaspis hexapleura, n. sp., x 400 879 



A single spine with its thick apophyses. 



Fig. 16. Hexonaspis hastata, n. sp., . . x 400 879 



