PLATE VIII. 



FIGS, PAGE. 



Sphaerophthalmus alatus (Boeck). 74 



1. Crauidium with neck-spine. Upper Lingula Flags, Malvern. Museum of Practical Geology, 



8906. x 4. 



2. External cast of crauidium with ocular ridges. Upper Lingula Flags, White-leaved Oak, 



Malvern. Museum of Practical Geology, 26067. x 4. 



3. Free cheek. Upper Lingula Flags, Malvern. Sedgwick Museum, x 4. 



4. Crauidium and thorax. Upper Lingula Flags, Malvern. Sedgwick Museum, x 4. 



5. Thorax and tail. Upper Lingula Flags, Malvern. Museum of Practical Geology, 8913. X 4. 



6. Tail, with the last thoracic segment attached. Upper Lingula Flags, White-leaved Oak, 



Malvern. British Museum, I. 14843. Presented by Mr. J. E. Lee. (The horizon is 

 given as Lower Lingula Flags.) x 4. 



Sphaerophthalmus major, sp. nov. 77 



7. Crauidium. Upper Lingula Flags, White-leaved Oak, Malvern. Museum of Practical 



Geology, 8903. x 4. 



8. Free cheeks in their proper relative position, with part of thorax. Upper Lingula Flags, 



White-leaved Oak, Malvern. British Museum, I. 14851. G. H. Piper Collection, x 4. 



9. Head and thorax. Upper Dolgelly Beds. British Museum, I. 7619. Belt Collection, x 4. 



10. Thorax and tail. Upper Lingula Flags, White-leaved Oak, Malvern. British Museum, 



I. 14849. G. H. Piper Collection, x 4. 



11. Thorax and tail. Upper Lingula Flags, Malvern. Sedgwick Museum, x 4. 



12. Imperfect head a id thorax, showing pleural spines. Upper Lingula Flags, Malvern. 



Oxford University Museum, x 4. 



13. Imperfect head and thorax, showing pleural spines. Upper Lingula Flags, Malvern. 



Oxford University Museum. x 4. 



Ctenopyge fusiformis, sp. nov. 80 



14. Crauidium and thorax. Upper Lingula Flags, Malvern. Sedgwick Museum. x 4. 



Ctenopyge bisulcata (Phillips). 81 



15. Crauidium of average size. Upper Lingula Flags, Malvern. Sedgwick Museum, x 4. 



16. Small crauidium with spine. Upper Lingula Flags, Malvern. Museum of Practical 



Geology, 8886. x 4 



17. Free cheek. Upper Lingula Flags, White-leaved Oak, Malvern. Museum of Practical 



Geology, 26068. x 4. 



18. Hypostome. Upper Lingula Flags, Malvern. Museum of Practical Geology, 8990. x 6. 



19. Small crauidium and thorax. Upper Lingula Flags, Malvern. Sedgwick Museum, x 4. 



