Pl. V.
Megalaspis attenuata Wahlenb.
Fig. 1. Horizontal section of cephalic eye near the inferior margin 60/1.
a surface of the eye, b frame with irregular or
reserve prisms, c part of the cheek with normal
structure. Spec. DP.
» 2. Hypostoma 2/1. Spec. BM.
» 3. The right macula 12/1.
» 4. Part of the same in transmitted light 60/1. Spec. DR.
» 5. Vertical (sagittal) section of the inferior part of the
hypostoma, crossing the macula a 12/1.
» 6. Vertical section of the same macula 60/1. All spec. from
Westanå, Östergötland.
Megalaspis limbata Boeck p. 61.
Fig. 7. Hypostoma, mostly decorticated 2/1. Specimen from Fogelsång,
Scania, the same as Brögger's original to his
fig. 23.
Megalaspis planilimbata Angel. p. 61.
Fig. 8. Hypostoma, Öland, Äleklinta 2/1.
Megalaspis sp.
Fig. 9. Vertical section of macula (a) 12/1. Öland, Lower
grey Orthoc. limestone.
Nileus armadillo Dalm. p. 62.
Fig. 10. Horizontal section of cephalic eye 60/1.
» 11. Vertical section of the same 60/1.
» 12. A similar section 60/1. a the prisms of clear
calcareous spar, b the surface of the eye and
the free cheek of yellow spar.
» 13. The hypostoma 2/1.
» 14. The right macula 12/1.
» 15. Vertical section of macula (a) 12/1. All specimens
from Persnäs, Öland, excepting fig. 13 from Westanå,
Östergötland.
Symphysurus palpebrosus Dalman p. 62.
Fig. 16. Horizontal section of cephalic eye 60/1.
» 17. Vertical section of the same 60/1.
» 18. Hypostoma 2/1. From Westanå, Östergötland.
Niobe frontalis Ang. p. 63.
Fig. 19. The hypostoma 2/1.
» 20. The right macula 10/1.
» 21. Part of the same in transmitted light 60/1.
Specimen from Kungs Norrby, Östergötland.
Niobe læviceps Ang. p. 63.
Fig. 22. Horizontal section of cephalic eye near the inferior margin,
a cheek 60/1.
» 23. Hypostoma 2/1.
» 24. The right macula 10/1.
» 23. Part of the same in transmitted light 60/1.
» 26. Vertical section of macula a 12/1.
Ogygia dilatata var. Sarsi Angel. p. 63.
Fig. 27. Hypostoma 2/1.
» 28. The right macula 10/1. From Christiania, Haakavik, Collection
of Dr. G. Holm.
Olenus sp. p. 33.
Fig. 29. A part of the free cheek with the scallop 6/1.
» 30. Profile of the scallop. Andrarum, Scania.
Parabolina spinulosa Wahlenb. p. 33.
Fig. 31. The free cheek with the scallop 3/1.
» 32. Profile of the scallop. From Jemtland.
Paradoxides oelandicus Angel. p. 64.
Fig. 33. Hypostoma 2/1.
» 34. The left macula 12/1. Öland, Torp.
Phacops cephalotes Barr. p. 65.
Fig. 35. The hypostoma; the shell mostly decorticated and the
maculæ visible as casts on the inside.
» 36. Cast of the inside of the right macula 12/1. Spec. from
Lochkow, Bohemia.
Phacops quadrilineata Angel. p. 66.
Fig. 37. Horizontal section of cephalic eye near the inferior margin
30/1. The dark points lie in the outermost stratum of the
cheek.
» 38. Vertical section of cephalic eye 20/1. An irregularly
hexaedral crystal below each lens. Specimen from Wisby a.
| K. Sv. Vet. Akad. Handl., Bd 34, No 8. | Lindström: Trilobites. Pl. V. |
Click on image to view larger sized. | |
| G. Liljevall del. | Ljustryck af Chr. Westphal Stockholm. |
