KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 32. N:0 I. 



119 



Plate III. 



Heliolites interstinctus L. p. 41. 



Fig. 1, 2. Microscopical structure in vertical aud borizontal sectious of a specimen from Tjelders, Boge, Got- 

 land, ä"/!. In the centre a coeuenchymal tube. 



Heliolites porosiis Goldf. p. 53. 



Fig. 3. A calicle begiuniug to cbange to coeueu- 



cbyma. ^"/i. 

 » 4. Tbe appearance of the same a little below, 



witb normal structure. '"/i. 

 » 5, 6. Three calicles from the same polypary, with 



dififerent structure. Torquay, England, ^"/i. 



Fig. 7. Longitudinal section of a calicular tube from 

 the same polypary as the next previous. 

 ^"/i. To remark the delicate spines of the 

 septal margins and the thick thecae in the 

 coenenchymal tubes. 



Heliolites Barrandei Penecke p. 58. 



Part of the surface of a specimen from the 

 Arachnophyllum stratum, a near Wisby; 

 uat. size. 

 10. Calicles of the same, as seen on the sur- 

 face. '^/i. Tops of iuferior septal spines 

 protrudiug in the centre. 



Fig. 11. 



12. 



Transverse section of a calicle and coeneu- 



chyma. ^Vi- 

 Longitudinal section of the same. '^/i. 



var. sjyongodes p. 60. 



Fig. 13. A polypary in natural size. Stratum 1/ — c 

 Wisby region. Drawn by C. Hedelin. 

 » 14. A calicle of the same from the surface. 



» 15. Transverse section of the same. ^^/i. 



Fig. 16. Longitudinal section; to be observed are the 

 ends of the septal spines in the centre of 

 the calicle. Observe the different colora- 

 tion in the vertical and the horizontal 

 sclerenchyma. ^^/i. 



Heliolites Barrandei Penecke p. 58. 



Fig. 17. Calicle from the surface, from stratum d 



Wisby. i2/i- 

 » 18. Longitudinal section of the same. ^^/i. 

 » 19. Transverse section of larger variety from 



Lilla Carlsö, stratum /. ^^/i. 

 -i 20. Longitudinal section of the same ^Vi- The 



white patches on both sides of the ca- 



Fig. 21. 



22. 



licular tube are fragments of coenen- 

 chymal thecae parallel with the sectioned 

 surface. 



Part of the surface of a specimen from 

 Tjelders, Boge, Gotland, nat. size. 



Transverse section of a calicle of the same. 



