48 
ETLATE IV. 
1. Ascoceras ampulla n. from Samsugn, Othem, | Fig. 23. 
with sculpture of the | 
shell magnified. | > 24. 
2. Dorsal view of the same 
with ornamentation of 
the neck magnified. 25. 
3. » > The neck from the ven- 
tral side. 26. 
4. » » Transversal section 
near the apex and BRT 
magnified portion of it. 
5. Ascoceras collare n. Lateral view of speci- 
men from Hamra. 
6. > » Longitudinal = section > 28. 
and a. impressions of > 29. 
the mantle on the septa 
in the interior. 30. 
(£ » Truncature and the si- 
phuncle magnified. ko Sk 
8. Asecoceras gradatum n. from Hoburg. nde 
SE , » Longitudinal section of 
another specimen and | » 33. 
a. apex magnified. 34. 
10. > » Longitudinal section of 
another specimen and 
a. interior surface of | 35. 
the septa, sectioned, 
magnified. 36: 
11—12. > » Fragments of a spe- 
cimen, longitudinally | >» 37. 
sectioned. | 38. 
13. Ascoceras sp. indet. from Samsugn in Othem | 
longitudinally sectioned. 
14. » ) Ornamentation of the » 39. 
same. 
15. » » Transverse section. > 40; 
16. » Dorsal view. 
17. Ascoceras lagena n. from Samsugn in Othem 
with fragment of the AE 
Nautiloid in situ and 
magnified details of the > 42. 
ornamentation. > 43. 
18. » D Same specimen longi- 
tudinally sectioned. 
19. » » Section of a fragment of a > 44, 
Nautiloid of this species. 
20. > > Ornamentation of the > 45. 
same. 
21. » » Section of another spe- » 46. 
cimen. 
22. > Ornamentation of the 47 
G. LINDSTRÖM, THE ASCOCERATIDAZ AND THE LITUITIDAZ. 
same. 
Ascoceras lagena n. Longitudinal section of 
another specimen. 
» A large specimen with 
the sutures of the four 
septa. 
from Lummelund with 
uncommonly long neck. 
Transverse section of the 
same at ÅA. 
Ascoceras sp. Samsugn, Othem, longitudinal 
section a little on the side of the central 
dorso-ventral axis and obliquely as only to 
show the first element of the siphuncle. 
Ascoceras sp. Kyrkberget in Wisby. 
Ascoceras sp. Nucleus from the stratum d 
near Wisby. 
The same in longitudinal sec- 
tion. 
Another specimen from the stratum c of Wisby. 
A fragment from Klints in Othem, having a 
peculiar angular form of the first sigmoid. 
Its ornamentation magnified. 
Ascoceras sp. showing three regular septa 
above the sigmoid ones, from Samsugn in 
Othem. 
Ascoceras from Hoburg, with the sigmoids very 
little prominent, a. marks of ornamentation. 
Asecoceras from Samsugn related to Asc. cu- 
cumis. 
» Transverse section. 
Fragment of an Ascoceras with indieations of 
an uncommonly large number of septa (12); 
a. lower end magnified. From Linde klint. 
ÅA restoration of the same specimen in natu- 
ral size. 
Ascoceras cucumis n. from Sandarfve kulle 
and details of ornamen- 
Ascoceras sp. indet. 
» »” 
tation a—d. 
» » Transverse section of the 
same. 
» » Neck and aperture. 
» > Ornamentation of the 
neck from the ventral 
side. 
» » Another fragment of a 
neck. 
» » A nucleus showing the 
sutures of the septa. 
» » Longitudinal section and 
a. enlargement thereof. 
» > Another specimen in a 
longitudinal section. 
