Chapter IV: Part 4

Order PRUNOPHRACTA.

Families BELONASPIDA, HEXALASPIDA et DIPLOCONIDA.

Fig. 1. _Diploconus amalla_, n. sp., × 300 885

Fig. 2. _Diploconus hexaphyllus_, n. sp., × 300 886

Fig. 3. _Diploconus cyathiscus_, n. sp., × 300 885

Fig. 4. _Diploconus cotyliscus_, n. sp., × 400 886

Polar view.

Fig. 5. _Diplocolpus serratus_, n. sp., × 300 888

Fig. 6. _Diplocolpus cristatus_, n. sp., × 400 887

Fig. 7. _Diplocolpus costatus_, n. sp., × 400 887

Fig. 8. _Diplocolpus sulcatus_, n. sp., × 300 888

Fig. 9. _Diplocolpus dentatus_, n. sp., × 300 888

Meridional section through the centre of the shell.

Fig. 10. _Hexacolpus infundibulum_, n. sp., × 300 881

Fig. 11. _Hexacolpus trypanon_, n. sp., × 300 881

Fig. 12. _Hexaconus echinatus_, n. sp., × 300 878

Fig. 13. _Coleaspis vaginata_, n. sp., × 300 866

Meridional section through the shell.

Fig. 14. _Coleaspis hydrotomica_, n. sp., × 400 867

Fig. 15. _Hexonaspis hexapleura_, n. sp., × 400 879

A single spine with its thick apophyses.

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

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Corrections made to printed text

Plate 4, heading: 'Order BELOIDEA. Family Sphærozoida.' corrected from 'Order LARCOIDEA. Family Tholonida.'

Plate 22, fig. 11: 'quadricuspis' corrected from 'quadricuspsis'.

Plate 31, fig. 9: 'distyliscus' corrected from 'dictyliscus'.

Plate 45, fig. 11: 'maclaganium' corrected from 'maclagganium' (per text).

Plate 66, fig. 3: 'dioscoridis' corrected from 'discoridis'.

Plate 96, heading: 'Lithobotryida' corrected from 'Lihtobotryida'.

Plate 105, fig. 11: 'gemmascens' corrected from 'gemmasceus'

Plate 128, fig. 2: 'rhinocannæ' (first time) corrected from 'rhinnocannæ'