240 G. LINDSTRÖM, ON THE SILUIUAN GASTROPODA AND PTEHOPODA OF GOTLAND. 



Plate XVII. 



Fig. 



1 - 



- 5, 



» 



6 - 



-10 



)) 



11- 



-16, 



)) 



17. 





„ 



18- 



-23, 



)) 



24- 



-25. 



)) 



26- 



-28, 



i) 



29- 



-31. 



» 



32- 



-35. 



M 



36. 





» 



37- 



-40. 



» 



41- 



-42. 



)) 



43- 



-44. 



„ 



45- 



-46. 



» 



47. 





» 



48. 





» 



49. 





)} 



.50- 



-52. 



» 



53- 



-55. 



» 



56. 





» 



57. 





Oriostoma discors Sow., p. 157. Fig. 1 — 2 from Hall, f. 3 — 5 from Wisby. 



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



from Ostergarn, f. 10 from Martebo. 

 Oriostoma coronatum n., p. 174. 

 Operculum of an unknown Oriostoma from Ostergarn making a new type, besides tliose desoribed 



in the letter press, wliere it bas been acoidentally omitted. 

 Oriostoma coronatum n. Operciila. 



» globosum Schlotiieim, p. 160. Fig. 24 from VVcstorgarn, f. 25 from Samsiign. 



» Wisbyense n., p. 167. 



» globosum Schloth. from Martebo. p. 160. 



Opcroula of unknown Oriostoma from Martebo p. 165. 

 Operculum from Martebo p. 167. 

 Oriostoma acutum n., p. 166. 



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



Opercula from the shale bed of Wisby, p. 167. 

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

 Operculum of unknown Oriostoma from Kålens Qvarn p. 167. 

 Cyclonema striatum His. p. 177 the operculum from Samsugn in Othem. 

 Operculum of unknown Cyclonema from Slite p. 177. 

 Opercula of unknown Cyclonema from Ostergarn p. 177. 

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

 Section of an opercuUim from Samsugn, genus and spccies unknown, p. 169. 

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



