JJIHANG TILL K. SV. VET.-AKAD. HANDL. BAND. 3. N:0 12, 33 



Explanatiou of Plates. 



PLATE I. 



Figs. 1 — 8. Orthis Lindströmi n. sp. 



1. Ventral valve, Lovened. 2. Interiör of ventral valve, 

 Kinnekulle. 3. Internal cast o£ ventral valve, Kinnekulle. 

 4, 5. Internal casts of ventral valve, Lovened. 6. Exteriör 

 of dorsal valve, Kinnekulle. 7. Interiör of dorsal valve, 

 Lillviken. 8. Internal cast of dorsal valve, Kinnekulle. 



PLATE IL 



Figs. 9 — 12. Ortliis Lindströmi, junior. 



9, 10. Ventral valves, Kinnekulle. 11, 12. Dorsal valves, 

 Kinnekulle. 



Figs. 13 — 19. Orthis exporrecta n. sp. 



13. Ventral valve, Kinnekulle. 14 — 16. Internal casts of 

 ventral valve, Lovened. 17. Dorsal valve, Kinnekulle. 

 18. Ditto, Lovened. 19. Internal cast of dorsal valve, 

 Lovened. 



PLATE III. 



Figs. 20, 21. Orthis earporrecta. 



Interiörs of dorsal valve. 



Figs. 22, 23. Orthis Hicksi (Salt.) Dav. aff. 



22. Internal cast of ventral valve. 23. Internal cast of 

 dorsal valve, Lovened. 



Figs. 24 — 28. Li/igulella (?) sp. indet. (from tlie strata with Paradoxi- 

 des Forchhamineri). 24. Exteriör, somewbat exfoliated, 

 Kinnekulle. 25. Interiör, Bornholm (Museum of Copen- 

 hagen). 26, Exteriör, Andrarum, 27. Ditto (Museum of 

 Lund). 28. Exteriör, Kinnekulle. 



Figs. 29, 30. Lingulella (?) Nathorsti n. sp. 



29. External cast, Andrarum (Museum of Lund), enlarged 

 (2 diam.). 30. Internal cast, Andrarum, enlarged (2 diam.). 



Fig. 31. Obolus (?) sp. indet. 



Interiör, parti}- exfoliated, Lillviken, enlarged (2 diam.). 



3 



