208 a. LINDSTkOm, on the SILLKIAN (iASTUOl'OUA AND I'TEKOrUDA UF GOTLAND. 



Plate 1. 



Fig. 1 — 3. Conularia cancellata Sandb. pug. 42. Fig. 1 spiue.? on the lowest row witli brokeu points, 



whence the circuliir openings, 1'. 2 part of two transverse ridges highly magnified, f. 3 



longitudinal section. The long spines are those on the ridges, the short ones are sections of 



the ridges where no spines are found. 

 « 4 — 8. Conularia bilineata n. p. 45. F". 4 lateral view, f. f) section near the upper margin, f. C surface 



near the apex magnified, f. 7 the same higher up between the two median septa, f. 8 



ornamentation in lower part of the shell. 

 » 9 — 12. Conularia monile n., p. 44. F. 11 transverse lines magnified and sectioned longitudinally, f. 12 



transverse section of transverse lines. 

 » 13 — IG. Conularia lavis n., p. 45. Fig. 15 transverse section of specimen fig. 13., fig. IG surface of 



fig. 14 enlarged. 

 » 17—24. Autuiletus calyptratus Sciirenk, p. 185. Fig^ 17 shell in it.s natural position and grown on a 



Favosites, figs 17 a — 22 other specimens and details of apex and umbilicus, fig. 24 part 



of the longitudinal section magnified to show the cellular structure outside the whorls. 

 " 25 — 31. Trijblidium reticulatnin n., ]). 55. Fig. 27 — 28 apex of a young specimen, f. 29 interior stratum 



with traces of colour bands, f. 30 muscular scars of the inside, f. 31 longitudinal section 



of the shell. 

 » 32. Patella (Olana) cochlear L. Recent^ Inside to show the muscular scars. 



" 33 — 37. Trijblidium unguis n., p. 56. Fig. 36 inside of apex with oval pit like a scar, f. 37 inside of 



shell with muscular scars. 

 » 38 — 39. Nacella deaurata Omrmn, recent from Foua, to compare the (exterior shape with the preceding. 



