Description of Plate II. 



Scenella antiqua nov. sp. Page 17. 

 Fig. 1 (^< 1.6). Almost perfect specimen, seen from above. Calcareous 



sandstone bed, Strenuella Lmst., Tomten. Krist. Univ. Pal. 



Mus. Cat. B. K. No. 61a. 

 Fig. la (>< 1.6). Same specimen, somewhat reconstructed, profile from front. 

 Fig. lb (x 1.6). Same specimen, somewhat reconstructed, profile from side. 

 Fig. Ic {x 3). Same specimen. Sculpture at side of shell. 



Scenella depressa nov. sp. Page 18. 



Fig.2 — 2a(x3) Incomplete specimen, seen from above. Calcareous sand- 

 stone bed, Holmia shales, Tomten. Krist. Univ. Pal. Mus. 

 Cat. No. 15. III. 5. 



Fig. 2b (x 3). Same specimen, profile from front. 



Fig. 2c (x 3). Same specimen, profile from side, somewhat reconstructed. 



Helcionella cf. rugosa Hall. Page 19. 



Fig. 3( ' 1.6). Incomplete specimen, seen from above. Calcareous sand- 

 stone bed, Strenuella Lmst., Tomten. Krist. Univ. Pal. Mus. 

 Cat. B. K. No. 61b. 



Fig. 3a (x 1.6). Same specimen, reconstructed. Profile from front. 



Fig. 3b (x 1.6). Same specimen, reconstructed. Profile from side. 



Helcionella rugosa Hall var. acuticosta Walcott. Page 20. 

 Fig. 4 (x 10). Complete specimen, seen from side. We see interior filling 



of shell and a part of outer side. Calcareous sandstone 



bed, Holmia shales. Tomten. Krist. Univ. Pal. Mus. Cat. 



No. 15. III. 4. 

 Fig. 4a (x 10). Impression of outer side, lower portion. Same specimen. 



Krist. Univ. Pal. Mus. Cat. No. 15. III. 4. 



