KONGL. SV. VET. AKADEMIENS HANDLINGAli. BAND 32. N:o I. 



135 



Plate XI. 



Diploepora Grayi Edw. & H. p. 102. 



Fig. 1. Longitudiiial section of the bacular stratum, the 



vesicular stratum seeu in the Iwttom. '"/i- 

 » 2. Section of calicular tuhes un the trausition 



from vesicular coenenehyraa to the bacular. 



^"/i. In the lowest tubs to the left as if 



columellas ou the tabula?. 

 » 3. Transverse section of the vesicuUir coeuen- 



chyma. Vi-' 



Fig. 4. Section of an entire branch of the coral from 

 side to side sliowing the central vesicular 

 coeneucliyma surrounded by the bacular 

 coenenchyma ou both sides. Section placed 

 in the direction of the growth. In the 

 bacular coenenchyma at the right hand 

 there is recurrence of the vesicular coenen- 

 chyma repeated four or live times. Vi- 



Fig. 5. 



7. 



Pycnolithus hijidus n. p. 105. 



Part of tlie surface magnitiod. Vi Specimen 



probable from the stratum a uear Wisby. 



Transverse section a little below the surface. 



Vi. 



Ti-ansverse section still deeper. Vi- 



Fig. 8. 



9. 



Longitudinal section near the surface, showiug 

 grooves in the coenenchyma. Vi- 



Longitudinal section. Vi- The tabulse below 

 the two upper ones have been made thicker 

 through låter accumulations. Longitudinal 

 white lines thecse of coenenchymal tubes. 



ProhelioUtes diibius Fk. Schmidt p. 70. 



Fig. 10. Surface in nat. size. 

 » 11. The same maguified. Vi- 

 » 12. The same magnified, favositoid and irregular. 



Vi. 



» 13. Transverse section, lovver down, ^/i, septal 

 spines incrassated through crystalline de- 

 posits. Specimen from Worms, Estland. 



» 14. Longitudinal section showing parts of three 

 calicles with septal spines directed down- 

 wards aud covered with crystals of iron- 

 oxidehydrate. Also from Worms. ^"/i. 



Fig. 15. 



16. 



17. 



Transverse section of the same. ^Vi- Crystal 

 accumulations also in the small incipient 

 calicles. 



Section of a specimen from a morainic deposit 

 at Öjle myr, Gotland, collected by Dr C. 

 WlMAN. Vi. The calicular centre of several 

 tubes is filled with a whitish siliceous mäss 

 and the septal spines are deformed, so as 

 to look as if bifid. 



Longitudinal section of the same, Vii showing 

 the downwards directed septal spines. 



Heliolites hirsutus n. p. 64. 



Fig. 18. Part of the surface, a little weathered. "/i. 



Specimen from Pattakumäggi, Estland, near 



Hapsal. 

 » 19. Transverse section a little below the surface, 



Vi, from the Alfvar near Hulterstad, Öland. 

 » 20. Part of a calicular tube, lougitudinally sec- 



tioned, ^^/i, same locality. 



Fig. 21. 



22. 



Side of a weathered polypary with three 

 calicles visible. The septal spines deformed 

 through weathering and postcrior depositions, 

 i-/i; same locality. 



Longitudinal section, same locality. Vi- 



