PLATE IV. 



N.B. — All the figures in this plate are from specimens from Lummaton in my 

 Collection, except where otherwise stated. 



Cyprosina Whidbornei, Jones. (Page 53.) 

 Fig. 



1. Right valve ; a, lateral view; b, dorsal view; c, end view. X 1^ diam. 



2. Left valve; a, lateral view; b, ventral view; c, end view. X 1-| diam. 



3. 4. Muscle-spots, from two individuals. X 10 diam. 



Cypridella ? sp. (Page 47.) 



5. Right valve ; a, lateral view ; b, ventral view ; c, end view. X 4 diam. 



Cypridina ? 2 spp. ? (Page 45.) 



6. Right valve ; a, lateral view ; b, ventral view ; c, end view. X 4 diam. 



10. Right valve; a, lateral view; b, ventral view; c, end view. X 3^ diam. 



Polycope simplex, Jones 8f Kirlcby. (Page 48.) 



8. Left valve ; a, lateral view ; b, ventral view ; c, end view. X 3 diam. 



Polycope Devonica, Jones ; and varieties. (Pages 48 — 50.) 



7. Left valve, defective in front ; a, lateral view ; b, ventral view ; c, end view 



X 3 diam. 



9. Left valve : original specimen. X 3^ diam. 



12. Var. obliqua, nov. Left valve, damaged in the upper front margin ; a, lateral 



view; b, edge view; c, end view. X 3£ diam. 

 ] 3. Var. major, nov. Right valve ; a, lateral view ; b, ventral view ; c, end view. 



X 3^ diam. 



17. Var. concinna, nov. Left valve; a, lateral view; b, dorsal view; c, end view. 



X 3^ diam. 



Polycope Hugheslsi, n. sp. (Page 50.) 



11. Carapace; a, showing left valve ; b, dorsal view; c, front view. X 5^ diam. 



Entomis peregrina, Whidbome. (Page 51.) 



14. Right valve ; a, lateral view ; b, ventral view ; c, front view ; d, rear view. 



X 6 diam. 



15. Left valve; a, lateral view; b, ventral view; c, front view. X 5 diam. 



Woodwardian Museum. 



Cyprldinella c^ica, n. sp. (Page 46.) 



16. Right valve; a, lateral view ; b, ventral view; c, front view. X 5 diam. 



Cypridina? sp. (Page 46.) 



18. Right valve ; a, lateral view ; b, ventral view ; c, end view. X 3^ diam. 



Sedis incer'lte. (Page 54.) 



19. a, View from above ; b, side view ; c, end view. X 2 diam. 



Tropidocaris, sp. (Page 44.) 



20. a, Portion of a valve ; X 3 diam ; b, portion of the ornament from the right- 



hand part of the specimen ; X 30 diam. 



Bactropus decoratus, Whidbome. (Page 43.) 



21. Abdominal segment of Aristozoe. X 3 diam. Torquay Museum. 



