Fi<;. 12 



I il^i'" -^•^r.y;'-' 



Sertularin ahielhia. a. Sliglitly enlir^^ctl. u niunolilct mu^nithHl ; «i, |>«ily|>!i; 

 b, ro[)ro(lnctivc fapsule (orifi:iniil). Tho orilii-i-H on ri>;lit 8i<l« of Fig. It urr> 

 closeii by horny lids. 



