with details of ornamentation. Fig. 4. ”Transverse section. Figs. 5—38. Details of the narrow, necklike aperture. 
Fig. 9. A complete, though smaller specimen, lateral view. Fig. 10. Ventral aspect of the same. Fig. 11. 
Fragment of an irregularly grown specimen. Fig. 12. ”Truncature of the same from below. Fig 13. Apex of 
the same in longitudinal section. Fig. 14. The same magnified. Fig. 15. Fragment of a very large specimen 
from Lye. Fig. 16. Decorticated specimen from Sandarfve showing the sutures of six sigmoid septa. Fig 17. 
Nucleus of the ventral part seen from its interior surface, with sutures of six septa. Fig. 18. Longitudinal sec- 
44 G. LINDSTRÖM, THE ASCOCERATIDAZ AND THE LITUITIDAE. 
PLATEN 
Ascoceras manubrium n. 
All specimens from Sandarfve kulle, excepting that delineated in figure 15, which is from Mannagårda in Lye. 
Fig. 1. Lateral view. Fig. 2. The truncature from below. Fig. 3. Auvother specimen in lateral aspect 
tion; a. apical part of the same showing seven septa and above them an adventive regular one. Fig. 19. Trans- 
verse section of another specimen taken at a height corresponding to A in fig. 18. Fig. 20. Transverse section 
at a height corresponding to B in fig. 18. Fig. 21. Transverse section, taken at a height corresponding to C 
in fig. 18 and showing only five septa. 
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