Fio. 485. Stephdlia corona, a young colony. (After Haeckel.) 



Fio. 48c. StepkaUa corona, colony in section. (After Haeckel.) ao, mouth of the primary 

 Kautrozooid, the cavity of which is continuous with the axial canal (ca) and the canal plexus 

 (oc) of the colony. The large pnenmatophore (p) is surrounded by a ring of nectophores (n), 

 from among which project* the large aurophore (I). The opening of the aurophore (lo) leads 

 through the pistillum (Im) into the cavity of the pneumatophore ; (.), secondary ga-strozooids 

 with (() tentaclM. 



