Fio. iSb.—Stephalia corona, a young colony. (After Uaockel.) 



Fio. 4(^i:—Strphali(( cnromi, roloiiy in section. (After Ilai'ckel.) nn, iiioutli of tin- i«iiiii:iry 

 vaslrozooid, tlio cavity of wliich is contiiiiiou.s with llie iixial canal (rn) and tlie canal [dcxiis 

 (lie) of the colony. Tlio larpi i)niMiniat<>idiorr> (j>) is siirroundod by a rinj; of ncctophores (h), 

 from anion); which projucts th<! lari^e aurophorc (/). The opening of the anrojdiore (to) leads 

 throinrh the pistilliiin (Im) into the cavity of the pneuniato]>liore ; {>), aocondary gastrozooids 

 with (<) tentaclfj). 



