21 U G. LINDSTRuM, ON THE SILUKIAN GASTROPODA AND PTEK0r01>A OF GOTLAND. 



Plate II. 



Fig. 1 — 4. Chelodes Berjmani Davidson & King, p. .01. Same specimen as figured by Davidson. 

 » 5 — 8. Anotlier specimen also from Klinteberg, 7 — 8 in natural size. 

 » 9 — 10. Chelodes Gotlandicus n. p. 62, from Grotlingbo. 

 ji n — 15. A specimen from Grotlingbo, f. 13 — 14 nat. size. 

 » 16 — 17. A specimen from Bursvik, nat. size. 

 » 18—27. Shorter valves from Grotlingbo, f. 20—21 nat. size. 

 » 28. Chiton sp. indct. Recent. Interior side to compare with fig. 25. 



JElattjccras .mrnutum Hisingek p. 63. 

 )) 29 — 31. From Wisby, details of ornamentation magnified. 



» 32 — 36. From Faro," f. 32—33 resembling Ncrita baliotis Sow., 34 — 36 like a lanthina. 

 » 37 — 38. From Eskeliiem, »Strophostylus». 

 » 39 — 40. Large specimen from Fdro, nat. size. 

 » 41 — 43. From Klinteberg, with lobate aperture. Compare Plat, niagarcnse Hall the 28 Kept. N. Y. St. 



Cab. pi. 28 f. 2-4. 

 1) 44 — 45. Nucleus from shale beds of Wisby. 

 » 46 — 47. From Klinteberg, loosely coiled. 

 » 48. From middle limestone of Wisby. 



» 49 — 50. From Klinteberg, disjointed whorls. 



» 51. Brawn from Hisingeu's original specimen to »Pi!copsis cornuta" as exact as possible, nat. size. 



» 62. Drawn from Hlsinoer's original specimen to nPileopsis sulcata" being corroded sample of the 



following variety, nat. size. 

 I) 53 — 57. Variety i)lorieatum» from Klinteberg f. 55 umbilical side, f. 56 the apical one. 

 11 58. Cra-'^pedoHoma degantuhim n. p. 18.3. 



I) 59 — 72. Plulijceras enorme n. p. 69, various specimens, witli details of ornamentation, all from liikvide 



in the parish of Nar. 

 u 73 — 78. Plati/ceras discifonne n. p. 68, from the sandstone of Hoburg in nat. size, ornamentation highly 



magnified. 



