590 EURYPTERID REMAINS FROM THE PENTLAND HILLS. 



Fig. 5. Stylonurus macrophthalmus. Posterior segments showing epimera. 



Fig. 6. Stylonurus macrophthalmus. Last two segments. 



Fig. 7. Stylonurus macrophthalmus. Fourth appendage. 



Fig. 8. Stylonurus ornatus. First and second appendages. 



Plate II. 



Fig. 9. Stylonurus ornatus. Appendage 3. 



Fig. 10. Stylonums ornatus. Appendage 4. 



Fig. 11. Stylonurus ornatus. Appendages 5 and 6. 



Fig. 12. Stylormrus elegans, n. sp. Left side. 



Fig. 13. Stylonurus elegans. Portion of carapace of a small specimen to show nature of margin. 



Fig. 14. Stylonurus elegans. Posterior segments presumably belonging to this form. 



Fig. 15. Drepanopterus lobatus, n. sp. 



Fig. 16. Drepanopterus lobatus. 



Plate III. 



Fig. 17. Drepanopterus lobatus. Fragment of specimen showing appendages and ornamentation. 

 Fig. 18. Stylonurus elegans. Right side. 

 Fig. 19. Drepanopterus bembycoides, n. sp. 

 Fig. 20. Drepanopterus bembycoides. 

 Fig. 21. Drepanopterus pentlandicus. 



Plate IV. 



Fig. 22. Eurypterus scoticus, n. sp. Last two appendages. 



Fig. 23. Eurypterus scoticus. Body segments x L 



Fig. 24. Eurypterus scoticus. Telson. 



Fig. 25. Eurypterus scoticus. Type specimen. 



Plate V. 



Fig. 26. Eurypterus minor, n. sp. 



Fig. 27. Eurypterus minor. Carapace. 



Fig. 28. Eurypterus minor. Posterior segments and telson of a somewhat larger specimen. 



Fig. 29. Eurypterus conicus. Last segments and telson. 



Fig. 30. Bembicosoma pomphicus, n. gen. and sp. 



Fig. 31. Bembicosoma pomphicus. 



CORRIGENDA. 



On p. 590, Fig. 9 should be numbered Fig. 10, and so on throughout, the last fig. 

 being No. 32. The figs, numbered 16, 21, and 25 appear in Plates III., IV., and V. 

 respectively. 



P. 583, lines 17 and 31, for "bembycoides" read " bembicoides." 



P. 588, for " Bembyrosoma" road "Bembicosoma." 



