138 



G. LINDSTRÖM, HKLIOLITlDv*:. 



Fig. 21. An initial colony from Riclimoiid, Indiana, 

 grown on a braclaiopodous shell. '^/i. 



» 22. Longitudinal sectiou of an older specimen, 

 same locality. ^"/i. 



» 23. Part of the surface of specimen from Wesen- 

 berg, Estland, ^^/i. 



» 24. Portion of the surface of tbc original spe- 

 cimen of V. Sebbach's Stylarrea Eoemcri, 



kindly communicated by Prof. VON Koenen. 

 To be compared witb lig. 19. 



Fig. 25. Calicle of a recent Tkecopsammia, magnificd. 

 This and the next figure are drawn by M. 

 Westergren, p. 14, 17. 

 » 26. Young colony of a Turbinaria grown ou the 

 surface of an older. Showing coeueuchymal 

 gemmatiou, p. 14. 



