244 G. LINDSTRÖM, ON THE SILURfAN GASTKOPODA AND PTKROPODA OF GOTLAND. 



Plate XIX. 



Fig. 1. Conularia aspersa n., p. 46. 



» 2. Trijblidium unguis n., p. 56. Fragment of a shell with well preserved muscular scars, five pair 



on each side, and on the left hand, upper figure, tliree enlarged, especially to show tlie 



intiinate structure of the largest scar. 

 1) 3 — 4. Palmacmcea soiarium n., p. 59. Fig. 4 nat. size. 

 » 5. Platyceras disciforme n., p. 68. 



" 6 — 11. Bellerojjhon tubulosus n., p. 77. 

 )) 12 — 14. M gemma n., p. 80. 



" 15 — 16. Pleurotomaria Hindei n., p. 99. 



» 17 — 20. » Holmi n., p. 100. Fig. 20 from original in the Museum of Wlsby. 



» 21 — 24. » Linnarssoni n., p. 96. 



» 25 — 29. » voluta n., p., p. 97. 



« 30 — 39. » planovbis His., p. 122. Fig. 34 part of the apical surface, near the suture, slit 



band changed into an angulated ridge, f. 35 — 36 part of the apical surface, f. 37 aperture, 



enlarged, from the apical surface to show the slit and the band. Fig. 39, slit band enlarged. 



