240 O. LINl).STU('h[, ON TIIK Sir.l'IUAN OASTIiOPOnA AND PTRIJoronA OF COTLANn. 



Plate XVII. 



Oriostoriia discors Sow., p. 157. Fig. 1 — 2 from Hull, f. 3 — 5 from Wisby. 



» » var. rugosum Sow. p. 159. Fig. 6 — 7 from Norderstraud near Wisby, f. 8 — 9 



from Ostergarn, f. 10 from Martcbo. 

 Oriostoina coronatwn n., p. 174. 

 Operculum of an unknown Oriostoma from Ostergarn making a new typo, besides those descrilied 



in the letter press, where it has been accidentally omitted. 

 Oriostot}ia coronatum u. Opereula. 



» globosum Schlotueim, p. IGO. Fig. 24 from VVestergarn, f. 25 from Samaugn. 



u Wisbyense n., p. 167. 



» globosttm Scui.oth. from Martcbo. p. 160. 



Opereula of unknown Oriostoma from Martebo p. 165. 

 Operculum from Martebo p. 167. 

 Oriostoma acuUim n., p. 166. 



» globosum Schlot. var. scidptinn Sow., p. 162. 



Opereula from tlie shale bed of Wisby, p. 167. 

 Oriostoma Wisbyense, n., p. 167, the operculum. 

 Operculum of unknown Oriostoma from Kiileiis Qvarn p. 167. 

 Vyclonema striatum His. p. 177 the operculum from Samsugn in Othcm. 

 Operculum of unknown Vyclonema from Slite p. 177. 

 Opereula of unknown Cyclonema from Ostergarn p. 177. 

 Opereula of unknown shell from shale and limestone of Wisby, p. 169. 

 Section of an operculum from Samsugn, genus and species unknown, p. 169. 

 Operculum of unknown shell, natural size, from the sliale beds of Wisby p. 170. 



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