122 



Description of Plate V. 



Strenuella primaeva Brøgger. Page 31. 

 Fig. 1 ( ' 2.5). Quite small cranidium, somewhat incomplete, length 2.4 



mm. Holmia shales, Tømten. Krist. Univ Pal. Mus. Cat. 



No. 13. XXVII. 219b. 

 Fig. 2 ( • 3). Cranidium 4.5 mm. long, with posterior margin unusually 



well preserved. Holmia shales, Tomten. Krist. Univ. Pal. 



Mus. Cat. No. 13. XXVII. 219. 

 Fig. 3 ( 3). Cranidium 5.1 mm. long. Holmia shales, Tømten. Krist. 



Univ. Pal. Mus. Cat. No. 13. XXVII. 128. 

 Fig. 4 ( 3). Cranidium 5 mm. long with a distinct anterior marginal 



furrow on frontal brim. Holmia shales, Tømten. Krist. 



Univ. Pal. Mus. Cat. No. 13. XXVII. 1 157. 



Cranidium 1 1 mm. long. Holmia shales, Tømten. Krist. 



Univ. Pal. Mus. Cat. No. A. K. 168. 



Hypostome, somewhat imperfect. Holmia shales, Tømten. 



Krist. Univ. Pal. Mus. Cat. No. 13. XXVII. 327. 



Strenuella Linnarssoni nov. sp. Page 38. 

 Cranidium 5 mm. long. Calcareous sandstone bed, Strenu- 

 ella Lmst., Tømten. Krist. Univ. Pal. Mus. Cat. B. K. No. y. 

 Cranidium 12.3 mm. long. Calcareous sandstone bed, 

 Strenuella Lmst., Tømten. Krist. Univ. Pal. Mus. Cat. 

 B. K. No. 65b. 



Fig. 9 ( • 1.5). Cranidium 13.5 mm. long, somewhat compressed. Calcare- 

 ous sandstone bed, Strenuella Lmst., Tømten. Krist. Univ. 

 Pal. Mus. Cat. A. K. No. 192. 



Fig.lO (: 1.2). Cranidium, 17 mm. long. Occipital ring lacking. Calcare- 

 ous sandstone bed, Strenuella Lmst., Evjeviken. Krist. 

 Univ. Pal. Mus. Cat. No. 15. IV. 1. 



Ellipsocephalus Nordenskjøldi Lnrs. Page 41. 



Fig. 11 {'-: 1.6). Cranidium 13 mm. long, somewhat compressed, with poin- 

 ted glabella. Calcareous sandstone, Strenuella Lmst., Tøm- 

 ten. Krist. Univ. Pal. Mus. Cat. A. K. No. 179. 



Fig. 12 ( ■ 1.6). Cranidium 16 mm. long. Calcareous sandstone bed, Strenu- 

 ella Lmst., Tømten. Krist. Univ. Pal. Mus. Cat. A.K. No. 18. 



Fig. 13( < 1.6). Cranidium 15 mm. long. Glabella faintly prominent, and 

 the whole cranidium unusually arched. Calcareous sand- 

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

 Cat. A. K. No. 172. 



